1000 Sentences With "sepals" | Random Sentence Generator

Look for specimens that have their spiky green leaflike sepals attached to the top, which means they have just been harvested.

The collective group of sepals circling the bloom is known as a calyx, which initially serves as an enclosure for the developing flower.

The plan involves bilateral symmetry, rather than radial symmetry; protective sepals alternating with petals; and usually a special lower petal, called a lip, that can serve as a landing pad for pollinators.

The flowering stem is curved at the apex and is secund. The numerous bracts are arranged in two imbricated rows and have short pedicels. The five sepals are unequal, with two long obtuse, lateral sepals and three other shorter sepals. The lateral sepals are oblong and approximately long.

Star shaped, 5–6 cm in size, deeply saturated fuchsia or violet near the base of sepals and petals. Interior half of the lower sepals typically display more coloration than other sepals and petals.

When five sepals are present they are quincuncial, and when four sepals are present they are opposite and decussate. Sepals can be equal or unequal. Sepals can be united at their base, as seen in sections Hirtella, Taeniocarpium, and Arthrophyllum. The margins are variable, having marginal glands, teeth, or hairs.

The lanceolate to linear-lanceolate sepals are long and wide, being equal or unequal, acute to apiculate, and with margins entire. Sepals have three to five unbranched veins that are scarcely prominent. The glands on the sepals are linear, becoming punctiform distally. The golden- yellow oblong petals are long and wide, shorter than the sepals.

The sepals are V-shaped in cross section, the dorsal sepal broader and slightly shorter than the lateral sepals. The petals are erect, oblong and much shorter than the sepals. The labellum is also shorter than the sepals and is thicker along its mid-line with two ridges of calli. Flowering occurs from November to February.

Its flowers have male and female reproductive structures. Its flowers have 5 elliptical sepals arranged in two rows. The three outer sepals are 6 by 3-4.5 millimeters and scaly. The two inner sepals are 8 by 5 millimeters.

Individual flowers have parts in fours. There are four smaller outer sepals, usually greenish and shed when the flower opens. Moving inwards, these are followed by four larger petal-like inner sepals, often brightly coloured. Inside the sepals are four true petals.

The sepals have flattened, club-like, dark red glandular tips long. The dorsal sepal is erect, long and wide. The lateral sepals are long, wide and spread widely, sometimes curved downwards. The petals are long, about wide and arranged like the lateral sepals.

The lateral sepals are free from each other and the labellum curves strongly upwards between the lateral sepals. Flowering occurs from June to August.

The flowers have both male and female reproductive structures. Its flowers have 5 sepals arranged in two rows. The two, smooth, oval shaped inner sepals are 7 by 5 millimeters. The three smaller outer sepals are oval-shaped and slightly bristly on their outer surface.

Flower-stalks are about . Calyx with several glands inside margin of sepals; sepals very narrowly elliptic, about , pubescent on both surfaces. Flowers are white, minutely tomentose outside, glabrous at throat; tube shorter than sepals, ; lobes oblong, as long as tube. Disc longer than ovary.

The sepals are narrow triangular in shape, long, the lateral sepals joined at their sides for about half their length. The petals are much shorter than the sepals. The labellum is orange with a sharp bend near the middle. Flowering occurs from October to November.

The cordate sepals are 7–10 mm by 8–10 mm, and have acuminate tips. The sepals also appear distinctly wrinkled and reddish-brown in color.

The sepals have thick, brownish, club-like glandular tips about long. The dorsal sepal is erect, curves slightly forward and is long and about wide. The lateral sepals are long, about wide and spread downwards. The petals are long and wide and arranged like the lateral sepals.

The sepals and petals have long, brown, thread-like tips. The dorsal sepal is erect, long and about wide. The lateral sepals are long, wide and spread widely at their bases but with their tips drooping. The petals are long, wide and arranged like the lateral sepals.

The dull white colour of the petals and sepals distinguish this from the other subspecies of Caladenia denticulata, but the petals and sepals are also more drooping.

Morphologically, both sepals and petals are modified leaves. The calyx (the sepals) and the corolla (the petals) are the outer sterile whorls of the flower, which together form what is known as the perianth. The term tepal is usually applied when the parts of the perianth are difficult to distinguish, e.g. the petals and sepals share the same color, or the petals are absent and the sepals are colorful.

The flowers are a little more than 1 cm across, with green sepals and petals, and a white lip with purple spots. The sepals are oblong-obtuse, 1 cm long, and 3–4 mm wide; the falcate revolute lateral sepals are slightly shorter and wider than the plicate dorsal sepal. The linear petals are much narrower than the sepals. The deeply trilobate lip is adnate to the column to its apex.

The stem at the base is bulbous, with thick roots. The leaves are short during flowering, linear lanceolate. The bracts are shorter than the pedicel, the sepals 2 cm long, the lip shorter than the sepals. The sepals are linear lanceolate, 3–5 nerved, acuminate; both the sepals and petals are pale green in colour, the lip green at the base and white at the centre with maroon horizontal striations.

The axillary flowers are four merous with a pedicels that are longer than sepals in fruiting material. The sepals are erect with a lanceolate shape and obtuse apex. Petals are striate and brown in colour and shorter than the sepals. The flower base is connate with a hooded apex.

Sepals 2.5–3 mm, lanceolate, with a brown midrib at the back. Petals small, oblong. Capsule included, about ½ the length of the sepals. Seeds small, subtrigonous, shining. Shining.

The sepal at the rear is egg-shaped, long, has a distinct raised ridge, and encloses the other sepals. The other sepals are long. All the sepals are sticky and usually greenish-brown to reddish-purple. The petals are long and joined at their lower end to form a tube.

Petals twice as long as sepals. Sepals 5, ovate, acute, 2 x 1.5 mm. Petals 5, elliptic, 3.5 x 2 mm. Disc large, cushion- like, with 5 globose lobes.

The dark-green, subcoriaceous leaves are densely packed along the stems. The tube and sepals are four-angled. The sepals are slightly shorter than the petals and have green tips.

Sampsonia, along with Hypericum sampsonii, based on the combination of perfoliate leaves and vesicular-glandular capsule valves. Hypericum assamicum is distinguished from H. sampsonii by its leaves that are shortly connate-perfoliate at the base (vs. broadly perfoliate bases), spatulate-oblong unequal sepals (vs. oblong subequal sepals), petals shorter than the sepals (vs.

Pedicels are long and the star-shaped flowers are wide, with the central flower being the largest. The sepals are lance-attenuate, measuring long and wide. Two sepals are typically longer and wider than the other three. Sepals have three to five veins, with a visible midvein, and lack the punctiform glands.

The pedicels are in axillary positions. Its green, oval to triangular sepals are 2-8 by 3-7.5 millimeters with margins that are fused at their base. The sepals come to a point at their tips. The inner surface of the sepals are densely hairy, while outer surface is hairless or slightly hairy.

The dorsal sepal is shorter but wider than two lateral sepals and forms a hood over the column. The long, narrow, lateral sepals hang like a pair of tails below the labellum. The petals are different from the sepals, having a narrow base with the main part widely expanded, in the form of donkey ears. As is usual in orchids, one petal is highly modified as the central labellum, differing markedly from the other petals and sepals.

The sepals, but not the petals, have thick, red glandular tips long. The dorsal sepal is erect near its base then gently curves forward and is long and wide. The lateral sepals are a similar size to the dorsal sepal but spread widely. The petals are long, about wide and arranged like the lateral sepals.

The sepals are about long and wide, the dorsal sepal turned downwards and the lateral sepals spread apart from each other. The petals are a similar length to the sepals but narrower. The labellum is horseshoe-shaped, about long and wide with between six and eight teeth long. Flowering occurs between December and February.

The flower has similar star-shaped red sepals and petals, a pale yellow curved column, and a white fringed labellum. The sepals often have red streaks and spots on a white background.

Usually only single flowers are arranged in leaf axils on a pedicel long. The sepals and petals are white or creamy white, the sepals longer and wider than the petals. The four sepals are triangular to egg-shaped, long and about wide and densely hairy on the back. The four petals are long and the eight stamens are hairy.

The sepals are creamy-white, occasionally pink, long, with 2 or 5 main lobes but the entire border of the sepals is feather-like. The petals are the same colour as the sepals, long, egg-shaped and covered with short hairs. The style is purple coloured, straight and long. Flowering time is from September to November.

There is occasionally a white flowered form. The large flowers are across, with horizontal falls (sepals) that arch downward and upright standards (petals). The petals are dark-veined and smaller than the sepals, which have a yellow (or whitish-yellow) signal patch or stripe. It has a yellow pubescence (rudimentary beard) on the sepals, (sometimes called falls).

The flowers are purple, long and wide. The sepals are egg-shaped, about long and wide, the dorsal sepal turned downwards and the lateral sepals erect and spread apart. The petals are curved, slightly smaller than the sepals and have a pointed tip. The labellum is horseshoe-shaped, about long and wide with about ten teeth near its tip.

The sepals and petals are strongly twisted, thick and shiny. The sepals are long, the dorsal sepal wide and the lateral sepal wide. The petals are a similar length to the sepals but only about half as wide. The labellum is mauve to purple with a cream-coloured to yellow centre, long, wide and has three lobes.

Sepals free, greenish, persistent. Petals present or absent, often partly adnate to the nectary disk, equal to the sepals or shorter, white or greenish, usually larger in staminate than in pistillate flowers. Disk present, extrastaminal; annular or divided into alternisepalous segments or glands. Stamens opposite the sepals, free or fused for up to 9/10 of their length.

The flowers are self-pollinating, tube-shaped near their bases and have an ovary that is triangular in cross section. The sepals are long and wide, the lateral sepals about long and wide and the petals are shorter and narrower than the sepals. The labellum is about long and wide and curves downwards. Flowering occurs between April and June.

The flowers, sepals and petals are yellow, spotted with brown.

Each has four triangular sepals and four tiny pink petals.

The sepals of the flowers are fused at the base.

The sepals and petals turn forwards and the lateral sepals are free from each other. The labellum is turned only slightly upwards and has a slightly frilly edge. Flowering occurs from September to October.

The sepals are lance-shaped to egg-shaped, long and wide and the petals are long and wide. The sepals and petals enlarge as the fruit develops. Flowering occurs mainly from January to June.

They have black glands on the leaves, petals, anthers, and usually the sepals. The leaves are opposite and perfoliate with entire margins. They have 5 sepals, 5 yellow petals, 3 styles, and numerous stamens.

The petals are much shorter than the sepals. The leaves are opposite, (sessile) without petioles and the sepals and bracts all green, without pale margins. The fruit petioles are erect and diffuse at maturity.

The sepals are white to pink, egg-shaped to triangular, long and wide. The petals are long and wide. The sepals and petals enlarge as the fruit develops. Flowering occurs mainly from February to June.

The sepals are about long and wide, the lateral sepals are long, the petals about long and wide. The labellum is orange, about long and wide curved and fleshy. Flowering occurs between August and December.

Orchids in this genus are similar to those in Acianthus but lack the long appendage on the ends of the sepals and petals of that genus. The lateral sepals differ from the petals in Acianthus.

There are no petals. The flowers are pistillate with 3-5 sepals and a 3-locular ovary. The staminate flowers with 4 sepals and 8-16 stamens. The capsules are broader than they are long.

It is surrounded by a calyx of long, densely hairy sepals.

The sepals remain after flowering and are wide, encircling the fruit.

The showy part of the flower consists of sepals, not petals.

The fruit is a nut with often wing-like accrescent sepals.

The flower of H. allendis is small, with a hairy long and wide pedicel and as with H. mexicana the flower is bisexual. The preserved sepals are urn-shaped, showing a distinct row of hairs along the middle of the sepal underside and a smooth upper surface. The sepals form a calyx around the wide hypanthium. The sepals of the single flower described are detached which may be the result of an early caducous condition, which makes the total number of sepals born uncertain.

The sepals and petals are long and wide with the petals shorter than the sepals. The sepals and petals spread widely and horizontally or curve downwards. The labellum is greenish-cream with a dark red tip and is long and wide. The sides of the labellum curve upwards and have linear teeth up to long, decreasing in size towards the tip.

They have three sepals and three petals, one of which is modified to form a lip. There is one dorsal sepal pointing downwards and two lateral sepals pointing up. The two normal petals are small, narrow and strap-shaped and curve back around the sepals. The short, triangular lip is dark green with paler stripes and points upwards and forwards.

They are small and greenish with five sepals and five petals. The sepals and petals are similar in size and appearance, free from each other, or very shortly united at the base. In the flower bud, the sepals are arranged quincuncially. This means that two are inside, two are outside, and one of them has one margin exposed and the other covered.

Pale brown, variably shaped seeds are born in three-part fruit capsules ( long, wide).Missouri Botanical Garden: Iris virginica The slightly fragrant flowers ( long, across) consist of 3 horizontal sepals, or "falls", and 3 erect petals. The petals and sepals can vary in color from dark-violet to pinkish- white. The sepals have a splash of yellow to yellow-orange at the crest.

The flowers are normally bisexual, small, and actinomorphic, with a perianth of three to six sepals. After flowering, the sepals often become thickened and enlarged around the developing fruit. Flowers lack a corolla and in some, the sepals are petal-like and colorful. The androecium is composed of three to eight stamens that are normally free or united at the base.

The pedicels emerge from warty tubercles on the main trunk. Its leathery to membranous, triangular to oval sepals are 1.9-3.1 by 1.5-2.6 centimeters with fused bases and short blunt- pointed tips. The sepals are hairless except their tips which have minute red hairs. The outside of the sepals are shiny while the insides are dull and covered in minute dots.

The seed capsule is 15-20 x 4-5mm long and oblong shaped. The greenish sepals are around 6-12mm long, linear-lanceolate and bend upwards; tapering to a long tip. They are pubescent on the margins and free, subequal and erect to suberect. The hairy sepals of B. burmanniana also helps to differentiate it from B. etheliae which has hairless sepals.

The sepals and petals are linear to lance-shaped near their base then narrow to a brownish-red, thread- like glandular tip. The dorsal sepal is erect to slightly curved forward, long and wide. The lateral sepals are long and wide and spread horizontally near the base, then droop. The petals are long and about wide and arranged like the lateral sepals.

Caladenia peisleyi is a terrestrial, perennial, deciduous, herb with an underground tuber and a single leaf, long and wide. A single greenish-yellow flower with pale red stripes is borne on a spike tall. The sepals and petals have narrow, dark red, club-like glandular tips long. The sepals and petals are long and wide with the petals shorter than the sepals.

Plants in the genus Zanthoxylum are shrubs, trees or woody climbers armed with trichomes. The leaves are arranged alternately and are usually pinnate or trifoliate. The flowers are usually arranged in panicles and usually function as male or female flowers with four sepals and four petals, the sepals remaining attached to the fruit. Male flowers have four stamens opposite the sepals.

The flower has a calyx of sepals each a few millimetres long, pointed, and covered with long hairs, and there are reflexed appendages between the sepals. The bowl-shaped flower corolla is white or blue and a few millimeters to over a centimeter wide. The fruit is a capsule which develops within the calyx of sepals and contains a few yellowish seeds.

The flowers are unisexual. Its flowers have 3 oval sepals, 1-1.5 by 1-1.5 millimeters. The sepals are smooth on their upper surface, hairy on their lower surface, and have fine hairs on their margins.

Each flower has five white, purple-marked sepals and 10–20 petals, longer and narrower than the sepals, usually white but sometimes pink. It has been described as "arguably the most beautiful buttercup in the world".

White, few, large, sepals fleshy and persistent; Inflorescence - small, racemes opposite leaves.

The petals are longer than the sepals. The fertile flowers are hermaphroditic.

In lilies the organs in the first whorl are separate from the second, but all look similar, thus all the showy parts are often called tepals. Where sepals and petals can in principle be distinguished, usage of the term "tepal" is not always consistent – some authors will refer to "sepals and petals" where others use "tepals" in the same context. In some plants the flowers have no petals, and all the tepals are sepals modified to look like petals. These organs are described as petaloid, for example, the sepals of hellebores.

The flowers are regular and bisexual, 2 to 3 cm across. There are three petal-like sepals which are pink with darker veins. They persist in the fruit. The three petals are like the sepals but somewhat larger.

The features of this species that distinguish it from others in the Myrtaceae are the red flowers, persistent sepals and deciduous fruit. The oblong leaves and narrow sepals distinguish it from Kunzea pulchella which also has red flowers.

The species is either , , , or tall. The leaves are either , , or by . It have 2-4 sepals each one of which is bell-shaped and long. Pedicels are either long or can be as long as it sepals.

Like all daphnes, the flowers have no petals, only petal-like sepals. The sepals form a tube that is 5–6 mm long with spreading lobes. The berries are about 8 mm across and are vermilion when ripe.

Caladenia audasii is a terrestrial, perennial, deciduous, herb with an underground tuber and a single hairy leaf, long and wide. A single yellow flower in diameter is borne on a spike high. The petals and sepals are long and spreading, the petals somewhat shorter than the sepals. The petals and lateral sepals are wide and taper to a thread-like end covered with glandular hairs.

The dorsal sepal is about long, wide and overlaps the petals forming a hood over the column. The dorsal sepal is green with pink edges, the lateral sepals are green and the petals are white. The lateral sepals and petals are about long and wide with the lateral sepals spreading apart from each other. The labellum is white, about long, wide with two lobes on the end.

The flowers are the largest of all Australian orchids and are reddish brown on the inside, white on the outside. The sepals are long, wide, the dorsal sepal angled upwards and the lateral sepals spread widely apart from each other. The petals are a similar size to the sepals. The labellum is long, wide, has three lobes and ranges in colour from yellow to bright purple.

The flowers are the largest of all Australian orchids and are white on the outside, sulfur yellow on the inside. The sepals are long, wide, the dorsal sepal angled upwards and the lateral sepals spread widely apart from each other. The petals are a similar size to the sepals. The labellum is long, wide, has three lobes and ranges in colour from yellow to bright purple.

Longitudinal section of a flower of Vanilla planifolia The normal form of the sepals can be found in Cattleya, where they form a triangle. In Paphiopedilum (Venus slippers), the lower two sepals are fused into a synsepal, while the lip has taken the form of a slipper. In Masdevallia, all the sepals are fused. Orchid flowers with abnormal numbers of petals or lips are called peloric.

The sepals, but usually not the petals, end with yellowish-brown, club-like glandular tips long. The dorsal sepal is erect but curves forward slightly, long and about wide. The lateral sepals are long and about wide and held close to horizontal, sometimes with a drooping tip. The petals are long and about wide, held like the lateral sepals and usually lack club-like tips.

Male Plebeia droryana bees pollinate the flowers by performing pseudocopulation. Bees become trapped in the tubular orchid after being attracted by the sepals or petals of the flower. Two types T. obtusum flowers exist, one with attractive sepals and one with attractive petals. The flowers are morphologically identical besides the sepals and flowers, and most likely discourage self-pollination by hindering the process of bee learning.

C. orientalis flowers can be solitary or grow in clusters in a cyme inflorescence. Most noticeable about the flower is the four yellow to yellow-orange sepals, which are often mistaken for its petals. The sepals are ovate-lanceolate to elliptic, wide-spreading and tend to curl back at its maturity. The sepals reaches widths of 2–3 cm and lengths of 6–9 cm.

The flower sepals have a purplish, yellow-green-tinged coloration and the smaller petals are purple to yellow. The sepals reach nearly 1 centimeter in length and the spur may just exceed one centimeter.Delphinium viridescens. Flora of North America.

Lateral sepals thick, 4 nerved, lateral petals are narrower than the sepals one nerved, more or less hyaline. Lip trilobed, long-spurred with porrect sidelobes. Ovary is shortly stalked. Tubers is oblong, hairy bear 1 or 2 per plant.

The sepals are oblong to egg-shaped and spread widely and the petals are usually narrower than the sepals. The labellum is relatively short with three lobes, the middle lobe tongue-like and the side lobes shorter and broad.

The sepals and petals are fleshy, the sepals long, about wide and the petals about long and wide. The labellum is brown, about long and wide with a sharp bend near the middle. Flowering occurs from March to August.

The lateral sepals are oblong, curved, long and about wide. The petals are linear, long and about wide. The lateral sepals and petals all turn downwards towards the ovary. The labellum is about long, wide with a reddish base.

The individual tubular flowers are long and smooth. The style long, the sepals long, smooth or with occasional hairs along the midrib. The stamens may be longer or shorter than the sepals. Flowering occurs mostly from May to October.

The sepals and petals are green and marked with violet spots or stripes.

They have four long, slender sepals and four shorter, broader petals. In many species, the sepals are bright red and the petals purple. Fuchsia colors can vary from white to dark red, purple- blue, and orange. Some have yellowish tones.

They die but remain, along with the sepals. The five stamens are short and opposite the sepals. Initially, they are turned inward and dump their pollen on the ovary. Eventually, they are bent outward by the expansion of the ovary.

Its solitary flowers are extra-axillary. Each flower is on a pedicel 1-1.6 centimeters long. Its flowers have 3 oblong sepals that are 4-5 millimeters long. The sepals are smooth, curved backwards, and have wavy or fringed margins.

Its flowers are arranged in cymes opposite the leaves. Each flower is on a pedicel 0.25-0.6 inches long. Its flowers have 3, oval-shaped sepals, 0.3 inches long. The sepals are hairy on their outer surfaces and smooth inside.

The 4 sepals persist to the maturity of the fruit. The 4 petals are white and spatulate in shape. The stamens are either 4 or 8 in number. If 4, they are opposite (along the same radii as) the sepals.

The sepals and petals are fleshy, the sepals long, wide and the petals about long and wide. The labellum is brown, about long and wide with hairy edges and a sharp bend near the middle. Flowering occurs from March to August.

The bright, pink colour of the flowers comes from the inner sepals of each flower when the fruit matures. The sepals enlarge to about 1.5 centimeters across, turning quite veiny, and surround the achene. Flowering period is throughout the summer.

The lateral sepals are lance-shaped, long, about wide. The petals are linear, about long and wide. The lateral sepals and petals are turned back against the ovary. The labellum is about long, wide on a stalk or "claw" about long.

Racemes, flowers are very small (less than 1/8 inches) but numerous and dense, elongating in fruiting stage; sepals ovate, about 1 mm long. Petals absent or reduced to filamentous, only 1/2 the length of sepals; style are very short.

Sepals are unequal, with three veins at the base, 5-7 mm long. The petals are 12-20 mm long, three-four times longer than sepals. The fruits are capsules 6-8 mm long. Each fruit compartment contains a blackish seed.

The flowers are produced in flowerheads of 10–30 flowers (up to 70), each flower in diameter with 5 pale yellow petals and 5 sepals. There may be black glands on the petals and sepals, as well as on the leaves.

Including the petiole, leaf length ranges from 15-50 centimeters. Flowers are purple and yellow, and have five sepals. S. apetala flowers have no petals; structures that resemble them are in fact sepals. Flower diameter ranges between 2.5-3.5 centimeters.

There are five sepals with 5 bracts. The petals are 15–20 cm long while the green sepals are 6-7mm in length. There are a total of 10 stamens. The fruit ranges from a dark brown to black color.

In P. californica the petals are egg-shaped, and about 1½-2½ cm long, reaching beyond the sepals, while in P. brownii the petals are circular or wider than long, and about ¾-1½ cm long, definitely shorter than the sepals.

Inflorescences are panicles or corymbs produced terminally and axillary with many flowered branches. The flowers have no petals but have greenish colored, 1.8–4 mm long sepals sometimes tinted purple. The sepals are ovate to obovate or oval in shape.

The racemose inflorescence bears only a few small bright green to white flowers at one time. The linear-oblong acute sepals are nearly 1 cm long; the lateral sepals are nearly half as wide as they are long. The petals are nearly liner, pointed at the end, and somewhat shorter than the sepals. The lip has a few red-brown spots and is adnate to the column to its apex.

Caladenia oreophila is a terrestrial, perennial, deciduous, herb with a spherical underground tuber and a single leaf, long and wide. A single greenish-cream flower with pale red stripes is borne on a spike tall. The sepals have dark red, club-like glandular tips long and are long and wide whilst the petals are slightly shorter. The sepals and petals curve downwards, the petals more widely spreading than the sepals.

The five unequal sepals are long and wide and are erect in bud and fruit. The sepals each have five to seven veins and six to twenty black punctiform laminar glands. The five bright yellow petals of each flower are tinged with red dorsally and are long and wide, typically about twice the length of the sepals. The petals are obovate to oblanceolate and bear few punctiform laminar glands.

The lateral sepals are similar in length to the dorsal sepal but have a pointed end and face forward beneath the labellum. The petals are somewhat shorter than the sepals, are lance-shaped and spread widely. The labellum is also shorter than the sepals, dished, broadly egg-shaped with the edges turned under, dull red with two rounded calli at its base. Flowering occurs between January and October.

The colour of the corolla varies between blue and violet, it can rarely occur in purple forms. The flower's outer three sepals are normally small, green and insignificant, whilst the inner two sepals are bigger. The inner sepals are usually shorter than the petals. The stalks of the eight stamens are joined together to form a tube, and united with this tube, one on either side, are two tiny petals.

The dorsal sepal is erect and the lateral sepals and petals spread widely but with drooping ends. The sepals are flat near their bases and wide at the base and taper to a thread-like end with reddish-brown glandular hairs. The petals are similar to the sepals but slightly shorter. The labellum is narrow triangular to lance-shaped, long and wide when flattened and curves downward at the tip.

Flowering plants have a similar leaf but lack a petiole, the leaf on the side of a brittle flowering stem. The flowers are small and pale coloured and have a dorsal sepal wider than the lateral sepals. The petals are much smaller than the sepals. The labellum is much different in size and shape from the petals and sepals, folded lengthwise with a narrow, ridge-like callus along the mid- line.

Flowers are solitary, each on a short pedicel. The flower has a calyx of sepals each a few millimeters long, pointed, and edged with stiff hairs, and there are reflexed appendages between the sepals. The bell-shaped flower corolla is white or purple-tinged and a few millimeters wide. The fruit is a capsule which develops within the calyx of sepals and contains a single red, pitted seed.

If the perianth is differentiated, the outer whorl of sepals forms the calyx, and the inner whorl of petals, the corolla. If the perianth is not differentiated into sepals and petals, they are collectively known as tepals. In some flowers, a tube or cup-like hypanthium (floral tube) is formed above or around the ovary and bears the sepals, petals, and stamens. There may also be a nectary producing nectar.

The flowers lack petals but have bell- shaped calyces of green petal-shaped sepals.

The sepals bear many long silky hairs hence the specific name barbatum meaning "bearded".

The sepals are mounted on the rim of the floral tube. Stamens may be mounted on the rim or inside. What appear to be petals are actually stipular appendages of the sepals. The fruit is a 1-seeded berry or an achene.

The whole inflorescence is a pyramidal to subcorymbiform shape. The pedicels are long; the bracts are long. The star-shaped flowers are in diameter, with orange-yellow petals that number about twice the sepals. The sepals are long, with three to five veins.

The sepals are hairy, long, the petals long and the stamens long. Flowering mainly occurs from December to January and the fruit is a capsule in diameter with the remains of the sepals attached. The fruit falls from the plant at maturity.

The shrub blooms abundantly in clusters of flowers along all the branches. Each flower is a star-shaped bowl of five pointed cream-colored sepals. Between the sepals are five tiny spoon- shaped cream-colored petals. The bloom period is December to April.

The sepals and petals curve inwards. The dorsal sepal is narrow triangular, long and wide and the lateral sepals are a similar length but wide. The petals are long and wide. The labellum is fleshy, curved, long and about wide with tiny spots.

The lateral sepals are erect with a small gap between them and the galea and have thread- like ends long. The labellum is long, narrow and down-curved, protruding prominently above the sinus between the lateral sepals. Flowering occurs from May to August.

The flowers are long and wide. The dorsal sepals is long, about wide and turns downward. The lateral sepals are about long and wide and spread apart from each other. The petals are a similar length but less than wide and curve downwards.

The floral cup is long with triangular sepals mostly long. The petals are about long and the stamens long. Flowering occurs in January and the fruit is a capsule long with the sepals attached and that remains on the plant at maturity.

The lateral sepals are long, wide and spreading. The petals are long and wide and arranged like the lateral sepals. The labellum is long, wide and white with purple lines and blotches. The tip of the labellum is orange and curled under.

It blooms from May to August. Green or yellowish-green flowers are on stalk of 5-20, with upper sepals closely contacting the petals to form a hood over the style. The lateral (side) sepals are curved. Petals are triangular and lance-like.

The base of the flower is enclosed in a tubular 10-veined calyx of sepals.

The sepals are bristle-tipped. The corollas are pinkish purple or magenta with white tips.

Its flowers are 8 millimeters in diameter and have green sepals and bright yellow petals.

The flowers have persistent, pinkish, winged sepals and no petals and are about in diameter.

The inflorescence is a dense cluster of sepals and four white to pink round petals.

The ovary is long and pressed against the flowering stem. The lateral sepals are about long, joined for most of their length and form the uppermost part of the flower. The dorsal and lateral sepals and the petals are similar in size and shape, lance-shaped to egg-shaped, long, but the lateral sepals are joined at their sides. The labellum is white, about long and wide, curves upwards and has a wavy margin.

Eulophia bicallosa is a variable, terrestrial herb with a single dark green, pleated linear leaf long and wide on a stalk long. Between ten and twenty pale green or cream-coloured flowers with purplish markings, long and wide are borne on a flowering stem long. The sepals are long, about wide with the dorsal erect and the lateral sepals spreading widely apart. The petals are long, about wide and partly covered by the lateral sepals.

The dorsal sepal is erect, wide at the base and tapers to a thread-like end with a dark, purple-red glandular tip long. The lateral sepals are wide at the base and taper to a thread-like end with a tip like that on the dorsal sepal, although shorter. The petals are wide, slightly shorter than the sepals and lack the glandular tip. The petals and sepals spread widely apart and have drooping tips.

Trimerous flowers have three sepals of variable size, and in male flowers six to many stamens. Tetramerous flowers have four sepals of 5 mm long at most and either four or eight stamens. In female flowers the sepals are united at their base to form a calyx tube, and have one or two styles, that are finely divided like an ostridge feather. One or two achenes may develop in each flower, within the inflating calyx.

Its flowers have 3 oval sepals that are 3-4 by 3-3.5 millimeters. The sepals are covered in dense, velvety, brown hairs on their outer surface and sparse hairs on their inner surface. Its 6 petals are arranged in two rows of 3.

There is a wide gap between the petals and the lateral sepals and the sinus between the lateral sepals has a central notch and curves slightly forward. The labellum is long, about wide, and is brown and blunt. Flowering occurs from July to September.

Its petioles are 4-5 millimeters long. Each flower is on a short pedicel less than 1 millimeter long. Its flowers have 3 oval-shaped sepals that are 5 by 8 millimeters. The outer surface of the sepals is covered in dense white hairs.

The lateral sepals are about long and curve around the labellum. The petals are a similar size to the lateral sepals and are partly enclosed by the labellum. The labellum is cup- shaped, fleshy and about long and wide. Flowering occurs from September to December.

The flowers are white to pink and are arranged singly in leaf axils. The four sepals are triangular, long and wide, longer and wider than the petals. The four petals are long wide. The sepals and petals increase in size as the fruit develops.

The sepals are green, triangular, long and about wide. The petals are pale yellow, long and about wide. The sepals and petals enlarge as the fruit develops. Flowering has been observed in March, May and August and the fruit is a capsule about and wide.

The sepals and petals are only weakly differentiated, usually 5, rarely to 7 in number, free, or united only at the base. The hypanthium is very short or else the ovary is superior. The nectary disk is intrastaminal. The stamens are opposite the sepals.

There are five sepals of unequal size and five yellow petals, often with a few black dots, and not much larger in size than the sepals. The stamens are united at the base into bundles. The fruits are dry.McKlintock, D. and R. S. R. Fitter.

The flowers are sessile and arranged singly in leaf axils. The flowers are white to pink, the sepals larger than the petals. The four sepals are triangular, long and wide but increase in size as the fruit develops. The four petals are long and wide.

The short, greyish leaves and softly hairy sepals and petals distinguish this species from similar verticordias.

P. calycosus can be distinguished from P. digitalis by its purple flowers and longer, attenuate sepals.

Each flower has three sepals and five petals. The roundish fruits measure up to in diameter.

Sepals ovate-acute. Petals white, with a purple midrib, 5–7 mm, lanceolate, acuminate. Carpels stellate.

The dorsal sepal is erect, long and wide. The lateral sepals are long, wide and spread widely and stiffly but with drooping tips. The petals are long and about wide, and arranged like the lateral sepals. The labellum is long, wide and has its tip rolled under.

The sepals and petals are broad near their bases then suddenly taper to long, thin, reddish, glandular tips. The dorsal sepal is erect, long and wide. The lateral sepals are long, wide, spread widely and turn downwards. The petals are long, about wide and also curve downwards.

The sepals are hairy, oblong to hemispherical, about long, the petals long and the stamens about long. Flowering mainly occurs from October to January and the fruit is a capsule about with the remains of the sepals attached, but which fall from the plant when mature.

The sepals are oblong to egg-shaped, long and wide. The dorsal sepal is upright or turned back and the lateral sepals spread widely apart from each other. The petals are broadly egg-shaped, long and wide. The labellum is long, wide and has three lobes.

The sepals are pale, egg-shaped to oblong, about long, the petals long and the stamens long. Flowering mainly occurs from October to November and the fruit is a capsule in diameter with the remains of the sepals attached. The fruit remains on the plant at maturity.

The sepals are purple, up to 5.5 x 1.5 cm and ending in a 1 cm long awn. The petals are purple and almost as big as the sepals. The corona consists of 6 or 7 rows, which are white at the base and above bluish purple.

The sepals are shortly united at their base with one being longer than the others. The five-veined yellow petals are oblong to oblanceolate and have rounded tips, measuring about as long as the sepals or shorter. The fifteen stamens are arranged in three loose fascicles.

Each flower is on a densely hairy pedicel 4-9 millimeters in length. The flowers unisexual. Its flowers have 3 sepals, 2-3 by 1.5-3 millimeters. The sepals are smooth on their upper surface, hairy on their lower surface, and have fine hairs on their margins.

The lateral sepals and petals are about long and wide with the lateral sepals spreading apart from each other. The labellum is white with a yellow centre, about long, wide with two lobes on the end that have wavy edges. Flowering occurs from July to September.

The lateral sepals are linear, long and about wide. The petals are narrow linear, long and about wide and slightly curved. The petals and lateral sepals turn backwards against the ovary and are inconspicuous. The labellum is about long and wide and held above the flower.

The sepals are longer and wider than the petals and all are white. The four sepals are triangular to egg-shaped, long and about wide but increase in size as the fruit develops. The four petals are about long and wide. Flowering occurs from May to June.

The family is characterised by flowers with usually four sepals and petals; in some genera, such as Fuchsia, the sepals are as brightly coloured as the petals. The seeds are generally very small. In some genera, such as Epilobium, they have tufts of hairsEpilobium. Flora of China.

The floral cup is about long with triangular sepals about long. The petals are long and the stamens about long. Flowering mainly occurs in January and the fruit is a capsule wide with the remains of the sepals attached and that remains on the plant at maturity.

The sepals are triangular, about long, the petals white, about long and the stamens arranged in groups of between five and seven, about long. Flowering occurs in February and the fruit is a woody capsule in diameter that remains on the plant with the sepals attached.

The sepals have thin, club- like glandular tips long. The dorsal sepal curves forward and is long. The lateral sepals are a similar size to the dorsal sepal and turn stiffly upwards. The petals are long, sickle-shaped, taper to a thin point and turn upwards.

The dorsal sepal is erect, long and wide. The lateral sepals are long and wide and curve stiffly downwards. The petals are long, wide and arranged like the lateral sepals. The labellum is long, wide and cream-coloured to yellow with red lines, spots and blotches.

The dorsal sepal is long, wide and curves forward. The lateral sepals are long and wide, spread apart and curve downwards. The petals are long, about wide and arranged like the lateral sepals. The labellum is long and wide, green and white with a dark red tip.

The upper sides of the leaves are more-or- less smooth, the lower sides rough and reticulate, to a varying degree between the subspecies. The flowers are arranged in open, slightly branched cymes, with 4–8 flowers to each inflorescence. The sepals have a short tooth, up to long, at the apex and are of two distinct sizes. Two outer sepals are around long by wide; three inner sepals are considerably larger, around long by wide.

Collectively forming the outer floral envelope or layer of the perianth enclosing and supporting the developing bud, which is usually green; the sepals, are pale green, narrowly ovate--oval or egg-shaped--and 2 to 3 times as long as they are wide, measuring at . They are pubescent, hairy outside and glabrous, smooth without hairs inside. The sepals are acuminate, tapering gradually to a sharp point at the tips of certain leaves or petals or sepals, at their apex.

The dorsal sepal is narrow egg-shaped to lance-shaped, long, about wide, turns downward and has a few dark stripes. The lateral sepals are linear to lance-shaped, long, about wide, slightly curved and spread apart from each other. The petals are a similar size to the lateral sepals or slightly shorter and have a dark central band. The labellum is long, about wide, turns upwards, sometimes reaching above the lateral sepals and has a wavy edge.

The flowers are usually pale coloured with an erect dorsal sepal and spreading lateral sepals and petals. The petals and sepals are narrow lance-shaped and about as long as each other and the dorsal sepal. The labellum is stalkless, oblong and about as long as the sepals and petals with two bead-like glands and two ridges along its length. The column is curved with wings and is about half as long as the labellum.

Mostly epiphyte herbs (with a few lithophytes) with laterally compressed pseudobulbs. One to four leathery or fleshy leaves are born near the top of each pseudobulb, and can be broadly ovate to oblong. The inflorescence is a terminal raceme (rarely a panicle). The flowers have 8 pollinia; petals are of a thinner texture than the sepals; sepals and petals are of similar shape, but the sepals being narrower; the lip or labellum is free from the arched flower column.

Thrixspermum carinatifolium is an epiphytic herb with flattened, straggly stems long and many wiry, branching roots. It has between five and ten elliptic leaves long, wide with a rounded tip and arranged in two ranks. The flowers are white to yellowish, long and wide arranged on a stiff, wiry flowering stem long. The sepals and petals spread widely apart from each other, the sepals long and about wide, the petals shorter and narrower than the sepals.

The lateral sepals are often joined near their bases and the lateral petals are shorter and narrower than the sepals. As is usual in orchids, one petal is highly modified as the central labellum, much different from the other petals and sepals. The labellum is above the column and joined to it by a flexible attachment, so that the labellum vibrates in a breeze. The edge of the labellum sometimes has fine teeth, glands or hairs.

Labelled image The inflorescence is a raceme with a few to many non-resupinate, dull- coloured flowers on a wiry stalk. The dorsal sepal is similar to or larger than the lateral sepals and its sides curve inwards. The lateral sepals and petals are attached the base of the column, the petals similar to, but smaller than the sepals. The highly modified labellum is dominated by the callus and is hinged to the column by a flexible "claw".

The bracts are longer than the sepals and are pubescent, hairy outside, glabrous, smooth, without hairs inside.

Caladenia amoena is similar to C. concinna but has smaller flowers and somewhat drooping petals and sepals.

Flowers April, May and September.Distinguished by its pendulous flowers, orange bracteole and dark purple to black sepals.

The flowers have a white or pinkish five-lobed corolla inside a cup of pointed reddish sepals.

It is a fibrous white pouch sometimes veined with purple, enclosed in a beaklike calyx of sepals.

Sepals bristly on margins. There are numerous clusters of flowers on stalks extending from upper leaf axils.

Conophytum achabense has only 4 sepals, and Conophytum hammeri has an obscure translucent window at its apex.

The inflorescence is a dense, coiled cyme of several flowers with soft-hairy sepals and white corollas.

Cauline leaves entire or folded on margins. Sepals white. 1 cm long. Petals 20 mm, purple pink.

Each cluster has up to 6 flowers with pinkish corollas in hairy purple-tinged calyces of sepals.

Sandersonia aurantiaca is a liliaceous monocotyledon with a bell-shaped corolla formed from fused petals and sepals.

The sepals are white to pale pink, long with 2 or 3 hairy lobes. The petals are the same colour as the sepals, oblong to egg-shaped and long. The style is long and straight or slightly curved and hairy. Flowering time is mainly from January to June.

The sepals, petals and labellum all have tiny hairs on their edges. The dorsal sepal is about long and wide with a pointed tip. The lateral sepals are about long, wide and spread widely apart from each other. The petals are about long, wide with a sharply pointed tip.

Its deeply lobed leaves are mainly basal, with those located further up the dark purple stem being much smaller. The flowers are generally blue, with the sepals and lower petals darker than the upper petals. The sepals are usually curved back, the trait which gives the plant its name.

The dorsal sepal is erect, long and wide. The lateral sepals are long, wide, spread widely and downturned with drooping ends. The petals are long, wide and arranged like the lateral sepals. The labellum is long, wide and white to cream-coloured, often with a dark red tip.

Each of the six stamens, opposite the petals, terminates in two spreading branches. The six bright yellow petals are enclosed by six bright yellow sepals. At the base of the flower are three greenish-yellow bracts. Less than half as long as the sepals, only one is partially visible.

The dorsal sepal is long, wide and curved forwards. The lateral sepals are long, wide and turn downwards. The petals are long, about wide and arranged like the lateral sepals. The labellum is long, wide and mostly dark red with its sides turned up and the tip curled under.

G. brevifolia can be distinguished by its narrower leaves and sepals. It is also similar to Gratiola ramosa, a species that it co-occurs with on the Southeastern Coastal Plain, from which G. brevifolia can be distinguished by the regular presence of 1-2 bracts subtending the sepals.

The foliage and stems are often quite hairy. The inflorescence holds several flowers, each with narrow, pointed bractlets and wider, reflexed sepals. The sepals and five white petals may be tinted with bright pink. The center of the flower holds ten stamens and up to 60 small pistils.

The four sepals are triangular to egg-shaped, long and wide, the four petals long and wide. The eight stamens alternate in length, with those near the sepals longer than those near the petals. Flowering occurs from September to February and the fruit are smooth capsules long and wide.

There is a wide gap between the galea and the lateral sepals. The lateral sepals are erect or turned backwards, have narrow tips long and a bulging sinus between them. The labellum is long, wide, dark brown, curved and protrudes above the sinus. Flowering occurs from April to July.

The flowers do not open widely. The sepals and petals are fleshy, the sepals long, about wide and the petals about long and wide. The labellum is reddish brown, about long and wide with smooth edges and a sharp bend near the middle. Flowering occurs from March to August.

The individual flowers are star- shaped, long and wide. The sepals and petals are fleshy, the sepals long, about wide and the petals about long and wide. The labellum is orange, about long and wide with a sharp bend near the middle. Flowering occurs from September to November.

The lateral sepals are linear to oblong, long and about wide. The petals are linear, long and about wide and curved. The petals and lateral sepals turn backwards against the ovary and are inconspicuous. The labellum is mushroom-shaped, long and about wide and held above the flower.

The sepals spread widely, are golden-yellow, turning greyish with age, long, with 6 to 8 hairy lobes. The petals are a similar colour to the sepals, long and egg-shaped with a toothed margin. The style is long, straight and glabrous. Flowering time differs, depending on the variety.

The four sepals are triangular to broadly egg-shaped, long, wide and hairy. The four petals are long and wide. The eight stamens alternate in length with those near the sepals slightly longer than those near the petals. The stigma is about the same width as the style.

The lateral sepals are narrow triangular, white and about long. The petals are similar to the lateral sepals but only half as long. The labellum is about long, slightly shorter than the dorsal sepal and has red and white streaks. It has many short red bristles around its edge.

There are pale reddish-brown bracts and the floral cup is glabrous, about long. The sepals are broadly egg- shaped, about long and the stamens are about long. The fruit is a capsule about in diameter, the sepals having fallen off, and that remains on the plant when mature.

The sepals of the male flowers are plus or minus sticky. The female flowers are solitary on whitish stalks which lengthen when in fruit. The sepals of the female flowers are about 2 mm long and whitish. The stigma has 3 broad recurved (curved backwards) lobes at its base.

The flowers are in size. Their color is usually bluish-purple, but may be white, pink or lilac, with petals and sepals fused (gamopetalous and gamosepalous). There are four petals, ciliate at the base. There are also four sepals, which differ in size (two are wide and two narrow).

The lobes are typically roughly and irregularly toothed or lobed again. The flowers are in a few flowered terminal cymose inflorescences about one inch across. Flowers have five sepals and lack petals, the sepals are lobed, white, fragrant, and covered with hispid hairs. Each flower has 10 connate stamens.

Calothamnus roseus is a shrub growing to a height of about . Its leaves are needle-like, mostly long and wide, circular in cross section and tapering to a sharp, prickly point. The flowers have 4 sepals and 4 petals. The flower cup (the hypanthium) and the sepals are hairy.

The ovary is broadly ovate and tapers upwards, terminating into five styles that are recurved at their apex. The stigma is obtuse and downy. The calyx is composed of five large, lax, and obovate sepals. The sepals are united at their base and their membranous margins are denticulate.

The individual members of these surrounding structures are known as sepals and petals (or tepals in flowers such as Magnolia where sepals and petals are not distinguishable from each other). The outer series (calyx of sepals) is usually green and leaf-like, and functions to protect the rest of the flower, especially the bud. The inner series (corolla of petals) is, in general, white or brightly colored, and is more delicate in structure. It functions to attract insect or bird pollinators.

The flowers are about in diameter and are white or greenish-white with a narrow stripe along the sepals and petals. The dorsal sepal is long, about wide, linear to elliptic in shape but narrows to a thin, thread-like end about wide. The lateral sepals are long, about wide, egg-shaped to lance-shaped in the lower part but taper to a long thin thread-like end. The petals are long, about wide and have a similar shape to the sepals.

The sepals and petals are linear, elongated and highly acute, curved at the apexes, the petals slightly shorter and wider that the sepals and the sepals more twisted than the petals. The labellum is slightly convex, shorter than the other segments, almost flat, three lobed, the lateral ones are rounded forming two auricles and the intermediate is triangular, highly pointed and spotless. The column is curved with two large often laciniated wings lateral to the stigma and a terminal anther.Cogniaux, Célestin Alfred (1903).

Lycaste flowers, like all orchid blooms, have three petals and three sepals. The petals are typically yellow, white, or orange, and the sepals are yellow, orange, green, or reddish brown. The petals and sepals may be marked sparsely or densely with red, reddish purple, purple, or reddish brown spots. The lip (ventral petal) may be very similar to the other two petals, as in Lycaste aromatica or Lycaste brevispatha, or colored quite distinctively, as in several subspecies and varieties of Lycaste macrophylla.

Flowers have 4 yellowish sepals, many yellow stamens, and may have 4 or no petals. It is atypical of members of the rose family in that the flowers have no petals, have four rather than five sepals, and the leaves are opposite (occur in pairs on the twig), rather than alternate (occurring one at a time going up the twig.California Desert Flowers, Sia Morehardt, Emil Morehardt, p 232, 264 The sepals may persist on the plant. It flowers between April and July.

The dorsal sepal is smaller than the other two sepals, is dished and erect but curves forward to form a hood over the labellum. The lateral sepals are much longer, broader and more conspicuous than the dorsal sepal and are white to pink and spreading. As is usual in orchids, one petal is highly modified as the central labellum. The other two petals are usually smaller and narrower than the sepals and are either erect, spreading or curved backwards towards the ovary.

The inflorescences bear two to four flowers, each with three sepals and five white petals. Fruits are unknown.

The flowers consist essentially of the sepals. The flowers range in color from very light to dark red.

The inflorescence is a cluster of rounded flowers with minute petals tucked inside a calyx of pointed sepals.

The flowers are white to light blue and are surrounded by calyces of sepals coated in long hairs.

The flower stalk is red, 5 mm long. Sepals are noticeable in spring to summer, when in flower.

The specific epithet acuminatum is derived from the acuminate shape of the sepals as compared to other species.

Its flowers have 3 triangular sepals that are 2–3.5 by 2.5-4 millimeters. The sepals are covered in dense, fine, rust-colored hairs on their outer surface and are hairless or covered in sparse hairs on their inner surface. Its 6 petals are arranged in two rows of 3.

The lateral sepals are long, wide near the base then tapered to thread-like tips. The lateral sepals are parallel to each other or crossed. The petals are long, wide and curve downwards. The labellum is long and wide, green near the base, grading to white with a dark maroon tip.

The species was first formally described by Robert Chinnock in 2007 and the description was published in Eremophila and Allied Genera: A Monograph of the Plant Family Myoporaceae. The specific epithet is from the Latin obliqui-, 'with sides unequal' and sepala, 'sepals', referring to the oblique bases of the anterior sepals.

The four sepals are elliptic to lance-shaped or egg-shaped, long and wide. The four petals are long and long but enlarge as the fruit develops. The eight stamens alternate in length with those nearest the sepals longer than those near the petals. Flowering occurs from April to November.

The dorsal sepal is erect, long and about wide. The lateral sepals are about the same length but slightly wider and the petals are long and wide. The lateral sepals and petals spread widely but curve downwards. The labellum is long, wide, green to yellowish-green with a dark red tip.

The sepals and petal are twisted near their tips, the sepals long and wide. The petals are spatula-shaped, long and about wide. The labellum is white with purplish marks, long and wide and has three lobes. The side lobes curve upwards and the middle lobe has three wavy ridges.

The dorsal sepals is egg-shaped, long, about wide and forms a hood over the column. The lateral sepals are triangular and curved, long and wide and the petals are about long and wide. The labellum is yellow, fleshy and curved, about long and wide. Flowering occurs between September and December.

The sepals are almost uniform, 1.4 to 2.2 cm long and slowly sharpened linearly. They are hairless to close-fitting, the outer three sepals are lanceolate to broadly lanceolate, and the inner two are narrowly lanceolate. The stamens and the stamp do not protrude beyond the crown. The ovary is hairless.

There is a wide gap between the galea and the lateral sepals. The lateral sepals are erect and have narrow tips long and a bulging V-shaped sinus between them. The labellum is long, about wide, reddish-brown and curved and protrudes above the sinus. Flowering occurs from June to August.

The sepals are greenish-white to cream, sometimes pink, about long with 4 to 7 hairy lobes. The petals are the same colour as the sepals, erect, long with pointed lobes a further long. The style is long, bent and hairy near the tip. Flowering time is from September to November.

The dorsal sepal is long, wide and more or less upright. The lateral sepals are a similar length but wide and spread apart from each other. The petals are a similar length to the sepals but narrower. The labellum is yellow, long and wide with three lobes and wavy edges.

The inflorescences are round and head-like; they contain both pistillate and staminate flowers. The pistillate flowers have 2 to 4 sepals that are equal and fused to almost the tip, and one ovary. The staminate flowers have 4 sepals and 4 stamens. The flowers measure about a millimeter long.

The perianth of both staminate and pistillate flowers is composed of three sepals and three petals. However, there is a difference between male and female flowers. In staminate flowers, the sepals are distinct, narrow and rounded at the apex. The petals are basally connate and the anthers have valvular dehiscence.

The sepals are creamy-white, sometimes pink, long, with 5 to 7 long-hairy or feathery lobes. The petals are a similar colour to the sepals, long, dished with small teeth around its edge. The style is long, with a few short hairs. Flowering time is from October to November.

The dorsal sepal curves forward and is long and about wide. The lateral sepals are long and wide, spreading or turned downwards near their bases but then drooping. The petals are long and wide and arranged like the lateral sepals. The labellum is long, wide and white or cream coloured.

The male flowering spike is slender, up to long. The individual flowers are stalkless and have two sepals and eight stamens. The female flowering spike sometimes branches and is a similar length. The individual flowers have four ovate sepals, a two or three part ovary, and styles up to long.

The dorsal sepal is long, wide and more or less upright. The lateral sepals are a similar length but slightly wider and spread apart from each other. The petals are a similar length to the sepals but narrower and curve forwards. The labellum is yellow, long and wide with wavy edges.

Caladenia busselliana is a terrestrial, perennial, deciduous, herb with an underground tuber and a single erect, hairy leaf long and wide. There are up to three pale yellow flowers on a stem high. The flowers are long and wide. The lateral sepals and petals spread widely and the sepals are thickened.

The lateral sepals are long, wide and turn down below the horizontal. The petals are long and wide and arranged like the lateral sepals. The labellum is long, wide greenish yellow with a red tip. The tip of the labellum is curled under with teeth up to long, along the edges.

The floral cup is about long, the sepals triangular long and the petals about long. The stamens are in bundles of about five and are long. Flowering occurs from August to September and the fruit is about in diameter with the remains of the sepals attached and the valves projecting upwards.

The inflorescence is a simple raceme with about 15 widely spaced yellowish-white flowers with wine-colored spots. The sepals are long by wide and petals are slightly shorter than the sepals. The labellum is four-lobed and has a long spur that is bent backwards and forked at the apex.

The sepals are long, about wide with boat-shaped lateral sepals. The petals are long, wide. The labellum is pink with dark red veins, long and wide with the sides curved upwards. Flowering occurs between December and February in Australia and between March and May, or October and November in Asia.

The four sepals are narrow triangular, white with pale green tips, long and wide, larger than the petals and hairy. The four petals are white with a pinkish base, long and wide and hairy. The eight stamens are hairy with those nearest the petals slightly longer than those near the sepals.

Each flower has five woolly sepals and no petals. The fruit is an oval capsule about four millimeters long.

Madhuca barbata is a plant in the family Sapotaceae. The specific epithet barbata means "bearded", referring to the sepals.

They contain one seed. They are supported on persistent sepals. The juice is purple, and the flesh is white.

The petals are fringed with hairs and the hairy sepals all-green, without the orange margin of L. vulgaris.

Its sepals are 6-8 millimeters long and pale brown. Its petals are 1.5 centimeters long and cream colored.

The flower has a base of fleshy, triangular sepals and longer, bright yellow petals just over a centimeter long.

Flowering occurs from July to October and is followed by a hairy, oval fruit long with the sepals attached.

The sepals of Pachypodium baronii are no different than most sepals in other flowering plants (angiosperms) in forming an outer floral envelop. In P. baronii's case, the sepals are dark green, connate at the base for about 0.2 mm (.008 (0.098-inch), persistent until maturity of the flower, and ovate or narrowly so. They measure 1.5–2.5 times as long as they are wide at 2.5 mm (inch) to 6 mm (inch) in length by 1.5 mm (0.059-inch) to 2.5 mm (0.098-inch).

Diagram showing the parts of a mature flower. In this example the perianth is separated into a calyx (sepals) and corolla (petals)Tetramerous flower of Ludwigia octovalvis showing petals and sepals. After blooming, the sepals of Hibiscus sabdariffa expand into an edible accessory fruit In many Fabaceae flowers, a calyx tube surrounds the petals. A sepal ( or )From French sépale, from New Latin sepalum, blend of sep- from Greek skepē, "a covering" and -alum from New Latin petalum, "petal", influenced by French pétale "petal".

The dorsal sepal and petals are fused, forming a hood or "galea" over the column. The dorsal sepal is more or less erect near its base then curves forward to the horizontal, the petals about the same length as the dorsal sepal. There is a wide gap between the lateral sepals and the galea and the lateral sepals which are erect, spread slightly apart from each other and no higher than the galea. There is a broad V-shaped sinus between the lateral sepals.

Octarrhena pusilla is an epiphytic or lithophytic herb usually with a single stem with thin roots. The shoot has between three and six fleshy, cylindrical, green to yellowish green leaves long and wide with their bases overlapping. Between five and twenty white to cream-coloured, non-resupinate flowers about long and wide are borne on a thread-like flowering stem long. The sepals and petals are egg-shaped, spread widely apart from each other, the sepals about long, the petals much smaller than the sepals.

The leaves are rounded or kidney shaped, generally with broad, somewhat rounded teeth. The flowers are borne individually on stalks (peduncles) that are usually horizontal or ascending. The sepals are joined at the base; where their margins become free, they curve back on themselves. Together the sepals form an urn-shaped calyx.

M. astonii's distinctive interlaced branches and heart-shaped leavesMuehlenbeckia astonii fruit and seed. After pollination the sepals grow, become translucent, and wrap around the black seed. Later when the sepals open they resemble another flower. This image shows one mature fruit and seed at bottom, and an immature seed (recently pollinated flower) above.

The four sepals are hairy, cream-coloured to pale pink, narrow egg-shaped, long, wide, longer and wider than the petals. The four petals are pale pink with a darker base, long and wide and hairy. The eight stamens are hairy with those nearest the petals slightly longer than those near the sepals.

The lateral sepals are a similar size to the dorsal sepal and more or less erect. The petals are about slightly longer and wider than the sepals. The labellum is about long, wide and has three lobes. The middle lobe is about long and wide but the side lobes are longer but narrower.

The flowers are overall greenish yellow, with quite variable purple markings. The lanceolate acuminate recurved dorsal sepal is 2—3.5 cm long by 1 cm wide. The lanceolate-triangular acuminate lateral sepals are usually broader but the same length as the dorsal sepal. The lanceolate acuminate petals are smaller than the sepals.

Its flowers have male and female reproductive structures. Its flowers have 5 oblong sepals that are 5 millimeters in length, and fused at their base. The sepals have patch of 3 millimeter long hairs in the middle of their outer surface. Its white corolla is 7 millimeters long and united at its base.

Each flower is on a scaly pedicel 3-5 millimeters in length. Its flowers have 5 sepals, 5 millimeters long, that are united at their base. The sepals are scaly on their outer surface and smooth on their inner surface. Its flowers have 5 white petals that are united at their base.

The floral cup is top-shaped, long and glabrous. The sepals are magenta to pink, fading as they age, long, with 5 or 6 feathery lobes. The petals are the same colour as the sepals, egg-shaped and . The style is long, extending beyond the petals, curved with hairs near the tip.

Its 3 oval sepals are 6 millimeters long and come to a point at their tips. The sepals are covered in fine hairs. Its 6 petals are arranged in two rows of 3. The fleshy, oblong to oval outer petals are 2 centimeters by 7-10 millimeters and are pointed at their tip.

The four sepals are egg-shaped and long. The four petals are broadly egg-shaped long with a rounded end. The four stamens near the sepals have warty filaments and vestigial anthers, whilst the four near the petals have smooth filaments and fertile, reddish brown anthers. Flowering occurs from May to October.

Each has a spherical to urn-shaped calyx of keeled sepals under a centimeter long with curving petals barely emerging from the tip. The calyx of sepals is whitish, darkening purple in maturity. The petals are purple. The fruit is a long, flat, curving silique which may be 7 centimeters in length.

The lateral sepals are a similar size to the lateral sepals, turn downwards and often cross over each other. The petals are long, about wide and spread apart from each other. The labellum is wedge-shaped with a pointed tip, long, about wide and slopes downwards. Flowering occurs from September to November.

The sepals are white, hairy, egg-shaped to triangular, long, about wide and longer and wider than the petals. The petals are white, long and wide. The sepals and petals enlarge as the fruit develops. Flowering has been observed in March and the fruit is a hairy capsule about long and wide.

The sepals are about long and hairy and the five petals are long and almost round. There are about 26 stamens which are usually longer than the petals and a style long. Flowering occurs in October and November and is followed by fruit which are hairy urn-shaped capsules with the sepals attached.

The cyathium contains minute staminate and pistillate flowers lacking petals. Male flowers terminate the peduncle with capitate clusters. The flowers consists of 4 tiny golden green upwardly bent sepals, acute to blunt in shape, and many stamens. Female flowers consist of minute green sepals, a hairy tri-locular ovary, and three fringed styles.

Though, the petals tend to drop soon after they bloom. Pollens are elongated, approximately 35x18 microns in size. Five or six fruits grow from the plant, which are attached to the sepals. While the fruit is developing, the sepals enlarge and turn bright red, in most cases turning the whole plant red.

The scattered, inflorescences, stalked, male flowers have free sepals and a stamen. Many fertile female flowers are sessile and have three or four sepals and an egg-shaped ovary. The more or less lateral style ends in an enlarged scar. The ripe figs (collective fruit) are orange-red and have a diameter of .

The sepals and petals are thick, shiny and twisted, the sepals long and wide and the petals a similar length but narrower. The labellum is long, wide with three lobes. The side lobes are upright and the middle lobe is curved with three ridges along its midline. Flowering occurs from March to July.

Flowers of plants in the rose family are generally described as "showy". They are radially symmetrical, and almost always hermaphroditic. Rosaceae generally have five sepals, five petals, and many spirally arranged stamens. The bases of the sepals, petals, and stamens are fused together to form a characteristic cup-like structure called a hypanthium.

The four sepals are narrow triangular to egg-shaped and about long and hairless. The four petals are egg-shaped, long with scattered, soft hairs. The ten stamens have a few soft hairs and those near the sepals have a prominent swelling on the top. The stigma is spherical and about in diameter.

The sepals and petals taper to thin, thread-like tips. The sepals have dark reddish, club-like, glandular tips long. The labellum is greenish-cream with pale reddish stripes and is long and wide. The sides of the labellum have short triangular teeth up to long, decreasing in size towards the tip.

The floral cup is long and densely hairy. The sepals are egg-shaped to triangular, long and densely hairy, the petals white, long and the stamens about long. Flowering occurs from October to January and the fruit is a hemispherical capsule wide that remains on the plant when mature with the sepals attached.

The oblanceolate-oblong dorsal sepal is 5 mm long, the obovate-oblong lateral sepals are slightly longer and noticeably broader. The lanceolate- liner petals are shorter than the sepals. The trilobate lip is adnate to the column to its apex. The lateral lobes of the lip are shaped like a half-moon.

The flowers are borne singly in leaf axils on stalks, long. There are 5 pink to purple, overlapping, hairy, lance-shaped, sepals which are long. The sepals have a sharply pointed end and are very rigid when dry. The petals are long and are joined at their lower end to form a tube.

The leaf blade is long and wide. The flowers are borne singly in leaf axils on stalks, long. There are 5 cream-coloured, overlapping, hairy sepals which have a greenish tinge but turn reddish-brown after flowering. The sepals are different shapes, varying from lance-shaped to egg- shaped and are long.

Its large yellow flowers are on 2.7-4.1 centimeters long peduncels that are in axillary positions. Its 3 broad, oval sepals are 1.8 centimeters long and come to a blunt point at their tips. The sepals have woolly hairs on both surfaces. Its flowers have 6 petals in two rows of 3.

The sepals are triangular, long and glabrous and the petals are pink, egg- shaped to more or less round and long. There are between 39 and 46 stamens long arranged in several whorls. Flowering occurs between August and November and the fruit is an urn-shaped capsule with the erect sepals attached.

The floral cup is a broad top-shaped, long, ribbed and glabrous. The sepals are golden-yellow, turning reddish brown with age, long, with 6 to 8 hairy lobes. The petals are a similar colour to the sepals, long and have long, pointed, finger-like appendages. The style is long, straight and glabrous.

The four sepals are egg-shaped to almost round, about long with their bases overlapping. The four petals are egg-shaped, about long with their bases overlapping. The eight stamens are club-shaped and erect, those nearest the sepals slightly longer than the stigma. Flowering occurs in April or from October to November.

The flowers are wide, and flower buds are ellipsoid. The two to twelve sepals are all of equal length, measuring long and wide. The three-veined sepals are or somewhat united, have glandular cilia, and are spotted with black dots. Flowers have up to nine pale yellow petals, measuring long and wide.

The specific epithet (orbiculata) is a Latin word meaning "circular", referring to the shape formed by the fused lateral sepals.

The fruit is a capsule in diameter, the sepals having fallen off, and that remains on the plant when mature.

Each funnel- or bell-shaped flower has deeply veined, hair-lined sepals and a blue corolla with a pale throat.

This, in turn was surrounded by several whorls of bracts that many homologize with petals and sepals in flowering plants.

The sepals are long, pale yellow to greenish-pink, turning lemon-cream as they age and have between 7 and 9 silvery, hairy lobes. The petals are a similar colour to the sepals, long and with hairy lobes a further long. The style is long, curved and hairy. Flowering time is from November to January.

Thelymitra venosa is a tuberous, perennial herb with a single fleshy, channelled linear leaf long and wide. Up to six bright blue flowers with darker veins, wide are arranged on a flowering stem tall. The sepals and petals are long and wide. The labellum (the lowest petal) is larger than the other petals and sepals.

Examples of flowers with much reduced perianths are found among the grasses. In some flowers, the sepals are fused towards the base, forming a calyx tube (as in the family Lythraceae, and Fabaceae). In other flowers (e.g., Rosaceae, Myrtaceae) a hypanthium includes the bases of sepals, petals, and the attachment points of the stamens.

The four sepals are broadly egg- shaped, long and wide. The four petals are long and with their bases overlapping. There are eight stamens with those near the sepals slightly longer than those nearer to the petals. Flowering occurs from August to April and the fruit is a glabrous capsule, long and about wide.

The dorsal sepal is about long and wide with hairless edges and darker coloured bands. The lateral sepals are long, about wide, turn downwards, with a humped base and a sharply pointed tip. There is sometimes a small gland on the tip of the lateral sepals. The petals are long, about wide with hairless edges.

Its flowers are arranged in groups of 3 or fewer on a rachis. Each flower is on a fleshy, slightly hairy pedicel 20-40 millimeters long. Its flowers have 3, oval-shaped sepals that are 5-7.5 by 5.5-7.5 millimeters. The outside of the sepals are densely hairy, while their inner surfaces are smooth.

Cork University Press. The inflorescence bears as few as 3 or as many as 50 small flowers clustered with short cymes. The flower has five hairy green sepals which are occasionally red-tipped, and five white two-lobed petals which are a few millimeters long and generally shorter than the sepals. Some flowers lack petals.

The dorsal sepal is curved forward over the column and the lateral sepals and petals are short, spreading and fan-like, with the lateral sepals joined at their bases. The labellum is narrow with short, blunt teeth on its sides and two rows of calli along its centre. Flowering occurs from late September to October.

The lateral sepals are long, wide and turn downwards with drooping tips. The petals are long and wide and arranged like the lateral sepals. The labellum is long, wide and cream-coloured with radiating red lines, spots and blotches. The sides of the labellum have short, blunt teeth, and the tip is curled under.

The four sepals are triangular to egg-shaped, long, wide and hairy on the lower side. The four petals are long and with scattered hairs. The eight stamens alternate in length with those near the sepals longer than those near the petals. Flowering occurs from June to November and the fruit is a smooth capsule.

The four sepals are broad, hairy and often coloured. The four petals are long and overlap for most of their length. The eight stamens alternate in length with those nearest the sepals thick with large anthers and those near the petals curving towards the style and with minute anthers. The stigma has four lobes.

The dorsal sepal is curved forward forming a hood over the column and is narrow egg-shaped, long and wide. The lateral sepals are curved lance-shaped, long and wide. The petals are a similar shape to the lateral sepals, long and wide. The labellum is long, wide and white with the tip curled under.

There is a narrow gap at each side of the flower between the petals and lateral sepals. The lateral sepals are erect with a tapering tip long and there is a deep, narrow sinus between them. The labellum is long, about wide, blunt and curved, protruding above the sinus. Flowering occurs in December and January.

Cochlospermum fraseri is a deciduous tree or shrub which can grow to 7 m tall. It flowers from April to October (March to August), the inflorescence being a terminal panicle. The flower is asymmetric, having five sepals in two whorls, with the outer two sepals being shorter than the inner three. It has numerous stamens.

The mostly naked stem is up to 15 centimeters long and holds an inflorescence of clustered flowers. Each flower is about half a centimeter wide, with triangular sepals covered in long, white hairs. Between the sepals are narrow, pointed petals of bright yellow. In the center of the flower are a few stamens and pistils.

The lateral sepals are usually larger than the dorsal sepal and the petals much wider than the sepals. The labellum is joined stiffly to the column and has three lobes. The side lobes are erect and more or less parallel to each other and the middle lobe sometimes has a pair of appendages or antennae.

The sepals and petals are spatula-shaped, the sepals long, wide and the petals long and wide. The labellum is white or yellowish, long, wide with three lobes. The side lobes are Scimitar-shaped and curve inwards and the middle lobe is small with a spur about long. Flowering occurs from July to September.

These may be small and flat, but often have a complex shape including a nectar-producing "spur" that may be longer than the sepals. There are four stamens. One of the common names for the genus, bishop's hat, arises from the shape of the flowers, particularly where the spurs are longer than the sepals.

The zygomorphic flowers of Impatiens are protandric (male becoming female with age). The calyx consists of five free sepals, of which one pair is often strongly reduced. The non-paired sepal forms a flower spur producing nectar. In a group of species from Madagascar the spur is completely lacking, but they still have three sepals.

The lateral sepals are pressed against the galea and there is a broad, flat sinus between their bases. The lateral sepals have erect, thread-like tips long which spread apart from each other. The labellum is long, about wide and curved with a deep notch on the end. Flowering occurs between April and August.

The four sepals are more or less round with a pointed tip and long. The four petals are about long and hairy on the inner side. The eight stamens alternate in length. The stamens near the sepals are black, sterile and about long and the ones near the petals are fertile but only about long.

Thelymitra flexuosa is a tuberous, perennial herb with a single wiry, linear leaf long and wide. Up to four cream-coloured to canary yellow wide borne on a flowering stem tall. The sepals and petals are long and about wide. The labellum (the lowest petal) is shorter and narrower than the other petals and sepals.

The dorsal sepal is linear to egg- shaped with the narrower end towards the base, long, about wide and folded lengthwise near the tip. The lateral sepals are oblong, curved, long and about wide. The petals are linear and curved, long and about wide. The petals and lateral sepals turn backwards against the ovary.

The sepals are creamish white, sometimes pink, spreading, long, with 6 to 8 long, hairy lobes. The petals are the same colour as the sepals, erect, long, with a tapering, almost pointed end. The style is straight, relatively thick, long with long, branched hairs near its tip. Flowering time is from October to January.

The lateral sepals are erect, thread-like and are up to longer than the flower. The petals are similar to the lateral sepals although smaller and are held horizontally or turn downwards. The labellum is red and creamy green and has two rounded ear-like shapes near its base. Flowering occurs from August to December.

The floral cup is hairy and about long. The sepals are triangular, silky hairy and about long. The petals are white, long and the stamens are about long. Flowering occurs from October to December and the fruit is a silky-hairy, hemispherical capsule in diameter with the sepals attached and that is shed when mature.

The floral cup is long and usually densely hairy. The sepals are broadly egg-shaped to triangular, long, the petals white, long and the stamens about long. Flowering occurs from January to February and the fruit is a capsule wide, remains on the plant for some time after maturity and has the sepals attached.

The lateral sepals are long, wide and stiffly spread widely apart. The petals are long and about wide and are arranged like the lateral sepals. The labellum is white with pale pink stripes and is about long and wide. The sides of the labellum sometimes have a few short teeth and the tip curls under.

The dorsal sepal is erect to slightly curved forward, long and about wide. The lateral sepals are long and wide and spread horizontally near the base, then curve downwards. The petals are long and wide and arranged like the lateral sepals. The labellum is long and wide and cream coloured with red lines and spots.

The dorsal sepal is erect, long and about wide. The lateral sepals are long and wide and the petals are long and about wide. The lateral sepals and petals spread widely near their bases but are then downcurved. The labellum is white, long and wide with narrow teeth up to long on the sides.

The dorsal sepal is erect, long and wide. The lateral sepals are long, wide, turn stiffly downwards and are nearly parallel to each other. The petals are slightly shorter and narrower than the sepals and curve stiffly downwards. The labellum is long, wide and yellowish with a dark red tip which is curled under.

The lateral sepals are long and wide and spread stiffly apart. The petals are long, wide and arranged like the lateral sepals. The labellum is long and wide, and white. The sides of the labellum have many red, linear teeth up to long with white tips, and the tip of the labellum curves downwards.

The lateral sepals are long, wide and spreading with drooping ends. The petals are long and wide and arranged like the lateral sepals. The labellum is long, wide and dark reddish- purple. The tip of the labellum is curled under and the sides are turned up and have many purplish teeth up to long.

They are narrowly funnel-shaped and about long. The five sepals are red, orange or yellow tipped with a purple band, and extending backwards in a red spur. The small, greenish-yellow rounded petals have a clawed base. The sepals turn brown after the flowers fall and enclose the two or three, dark brown seeds.

The sepals are pale to bright yellow colour, long, with 5 to 7 lobes which have a fringe of coarse hairs. The petals are a similar colour to the sepals, long, with many lobes spreading like the fingers of a hand. The style is long, straight and glabrous. Flowering time is from September to November.

The floral cup is a broad top shape, long, ribbed and glabrous. The sepals are yellow, turning red with age in some varieties, long, with 6 to 8 hairy lobes. The petals are a similar colour to the sepals, long and have long, pointed, finger-like appendages. The style is long, straight and glabrous.

The floral cup is broad, top-shaped, long, ribbed and glabrous. The sepals are golden-yellow, do not change colour with age and are long, with 6 to 8 hairy lobes. The petals are a similar colour to the sepals, long and have long, pointed, finger-like appendages. The style is long, straight and glabrous.

Boronia cremnophila, commonly known as the Kimberley cliff boronia, is a plant in the citrus family, Rutaceae and is endemic to a small area in the Kimberley region of Western Australia. It is an erect or spreading shrub with both simple, and trifoliate leaves, and white sepals and petals, the sepals larger than the petals.

The lateral sepals (bottom left and right sepals) can be a more lanceolate shape where the tip is much thinner than the base (spear shaped) and have a size range of around 17 – 34mm x 5 – 7mm. The petals and sepals are rather similar in size and shape. At around 25mm in length, the petals are narrow and elongated, in an oblong shape. The lip can have a variable shape (usually ovate or lanceolate) but is usually wider than the petals, with the size ranging 15 – 25mm x 4.5 – 11mm.

They are large compared to the rest of the plant, 2 to 3mm in diameter with male and female parts both present and functional. The calyx consists of five broad, often unequal sepals that are joined in the lower part to form a floral cup that encloses the lower half of the ovary and is thickened along its fissures to form five ribs. The sepals persist beyond the maturity of the fruit. The petals are scale-like, white and barely visible, on the rim of the floral cup between the sepals, or sometimes absent.

The petals and lateral sepals are long and spread widely, giving rise to the common name. The dorsal sepal is erect, wide at the base and tapers to a thread-like end with a club-like tip a further long and covered with dark red glands. The lateral sepals are about wide at the base then narrow to a thread like end with a club-like tip similar to but shorter than that on the dorsal sepal. The petals are shorter than the sepals and lack the blackish tips.

There are four stamens with the lower pair having reduced fertility. The fruit is a drupe with the sepals remaining attached.

The development and form of the sepals vary considerably among flowering plants.Sattler, R. 1973. Organogenesis of Flowers. A Photographic Text-Atlas.

They have no petals, but five tiny green to reddish sepals. The fruit is a utricle just over a millimeter long.

Male flowers resupinate, triangular. sepals and petals are lanceolate, dark green marked with maroon. lip also triangular, white. Female flowers green.

Leaves are narrow, up to 12 cm long. Flowers have green sepals and white petals.Hartman, Ronald Lee & Rabeler, Richard Kevin. 2004.

The flowers unisexual. Its flowers have 3 sepals, 0.7-1 by 1-1.5 millimeters, that are partially fused at their base.

Caltha leptosepala that occurs in western North- America mostly has white flowers, and the rare yellow-flowered variety has lanceolate sepals.

Its pendulous flowers are yellow with red highlights. Its flowers have 3 brown sepals that are covered in dense wooly hair.

The flower is lipped at the mouth. The small, dark, hairless fruit develops attached to the sepals once the corolla falls.

Their thick sepals, petals, stamens, and carpels are poorly structured: they vary in numbers and intergrade. Seeds and fruit are undescribed.

As these die the sepals enlarge and become pink to red in colour, the display peaking at Christmas time in Australia.

Stamens number eight to twelve, are opposite the sepals and petals, and have introrse, dorsifixed anthers that dehisce by longitudinal slits.

Delimitation is commonly not problematic, because calyx and corolla both occur in an isomerous whorl or series of sepals and petals.

It is more common among polysepalous and polypetalous plants than in those in which the sepals or petals are united together.

The sepals are pale pink to dark magenta, long, spreading and have 5 to 7 long, hairy lobes. The petals are a similar colour to the sepals, long and sometimes erect, elliptic in shape with a smooth edge. The style is straight, thick, long and has downward-pointing hairs on one side. Flowering mostly occurs from August to October.

The four sepals are narrow triangular, long, wide and densely hairy. The four petals are long, wide and hairy on the back. The eight stamens are hairy with those opposite the sepals longer than those near the petals. Flowering occurs from May to June and the fruit is a mostly hairless capsule about long and wide.

The sepals are pink or purple, occasionally white, long, with 5 to 7 hairy lobes. The petals are a similar colour to the sepals, egg-shaped, long and sometimes have a few small teeth on the end. The style is long, S-shaped and hairy. Flowering time is from November to February, or sometimes as late as May.

The sepals are pale pink, long wide and have 6 to 8 hairy lobes. The sepals also have two hairy, ear-like appendages which bend over the hypanthium. The petals are spreading, dark red, egg-shaped, sometimes have a few irregular teeth and are long. The style is long with a few hairs near the tip.

Pachypodium inflorescence, or clusters of flowers, appear either at the end of the stem, growing directly off the stem, or attached to the stem by branchlets. The bracts, or leaves surrounding the inflorescence, resemble sepals. Flower stalks range in length from 0 to 56 mm. Pachypodium flowers always consist of five sepals, ranging in shape from ovate to oblong.

The dorsal sepal is a narrow egg-shape to lance-shape, long and about wide. The lateral sepals are up to long and spread apart from each other. The petals are narrow linear to lance-shaped, long and about wide. The labellum is long and turns upwards, sometimes extending above the lateral sepals and its edges are wavy.

The lateral sepals are narrow lance-shaped, long, wide, turn downwards and are usually parallel to each other. The petals are about the same size as the sepals and spread widely or turn downwards. The labellum is egg-shaped, about long, wide with three lobes. The lateral lobes are erect, surround the column and have slightly wavy edges.

The white flowers clustered in axillary peduncles are hermaphrodite, peduncles and pedicels are hairy, 4-5 hairy sepals and more or less imbricate, 4 –5 petals alternate to the sepals. 8-10 stamens, 2 styles. The fruit is an acuminate capsule, hairy and crowned by persistent styles, inside them there are dark brown seeds about 1 mm long.

The sepals are long, pale pink to magenta-coloured and have between 5 and 7 hairy lobes. The petals are a similar colour to the sepals, long and have a fringe a further long. The style is long, curved and has a tuft of hairs near the tip. Flowering time is from late October to December.

There is a wide gap at each side of the flower between the petals and lateral sepals. The lateral sepals are erect or turned backwards with a tapering tip long and there is a broad bulging sinus with a small notch between them. The labellum does not protrude above the sinus. Flowering occurs from February to May.

They tend to be produced sporadically throughout the year and last for about a week. The sepals are free and subsimilar. The petals are also free from each other and slightly shorter than the sepals. The labellum is fixed rigidly to the column, fleshy, pubescent or hairy, formed by three lobes and features a sac or spur.

The sepals are pink, mauve or white, long and spread widely with 3 to 7 feathery lobes. The petals are a similar colour to the sepals, elliptic to egg-shaped, long and are initially spreading but later turn upwards. The style is long, curved and hairy near the tip. Flowering time differs, depending on the variety.

The Clematis paniculata is a unisex plant though the male and female flowers are similar as both have six sepals, with white flowers lobed. But, the female flower has a smaller sepal than the male. They both have white sepals that are narrow towards the end, rectangular or rounded end. Females have few staminodes and males have lots.

The well developed blue flower has 6 petals and sepals spread out nearly flat and have two forms. The longer sepals are hairless and have a greenish-yellow blotch at their base. The inferior ovary is bluntly angled. Flowers are usually light to deep blue (purple and violet are not uncommon) and bloom during May to July.

The floral cup is top-shaped, about long, ribbed, slightly wary and glabrous. The sepals are yellow, turning deep red with age, about long, with 8 to 10 densely hairy lobes. The petals are a similar colour to the sepals, about long and have long, pointed, finger- like projections. The style is long, straight and glabrous.

Each flower is pendulous, about wide and long with petals and sepals that do not spread widely. The dorsal sepal is a broad egg-shape, about long and wide. The two lateral sepals are lance-shaped, long and about wide and dished near their base. The petals are egg-shaped, about long and less than wide.

The bracteoles have a notched base and come to point at their tip. Its green, oval sepals are 1-1.5 by 0.8-1.2 centimeters and come to a tapering point at their tips. The sepals have white silky hairs at their base. Its mature, fleshy petals are yellow with streaks of red highlights at their base.

There is a wide gap between the galea and the lateral sepals which are hairy and have erect, narrow tips long. The sinus between the lateral sepals is flat and hairy with a deep notch in the centre. The labellum is long, about wide and dark brown, protruding slightly above the sinus. Flowering occurs in October and November.

Boronia interrex, commonly known as the Regent River boronia, is a plant in the citrus family, Rutaceae and is endemic to a small area in the Kimberley region of Western Australia. It is an erect, sometimes low-lying shrub with pinnate leaves, cream-coloured to pale pink sepals and pink petals, the sepals longer and wider than the petals.

The dorsal sepal is usually longer than the lateral sepals and the petals usually shorter and narrower than the sepals. The labellum is erect, flat and usually undivided with two ear-like lobes near its base. The column is short and has two relatively large wings. No nectar is produced and there are two pairs of waxy, yellow pollinia.

The floral cup is long and the sepals are glabrous, almost round and about long. The petals are long and the stamens are about long. Flowering mainly occurs from September to December and the fruit is a capsule in diameter and that remains on the plant at maturity, the remains of the sepals having fallen off.

The lateral sepals are long, about wide and horizontal near their bases, then turn downwards and finally drooping. The petals are long, about wide and arranged like the lateral sepals. The labellum is long, wide and creamy-white with red lines or spots. The sides of the labellum have short, blunt teeth, and the tip is curled under.

The stamens are in two whorls of five, one whorl opposite the sepals and the other opposite the petals. Those in the outer whorl, opposite the sepals, are longer. The filaments are fused at the base, shortly in Lepidobotrys, but forming an extension of the tubular nectary in Ruptiliocarpon. The pollen is produced in four thecae on each anther.

The sepals and petals spread horizontally or slightly downwards. The dorsal sepal is erect, linear in shape, long, wide and curves forward, forming a hood over the column and around its sides. The lateral sepals are long, about wide and the petals are long and wide. The labellum is long and wide and white with red or purplish spots.

There is a wide gap at each side of the flower between the petals and lateral sepals. The lateral sepals are erect with a tapering tip long and there is a broad, bulging sinus between them. The labellum is long, about wide, dark reddish-brown and curved, protruding above the sinus. Flowering occurs from March to July.

The galea is white with green and reddish-brown lines. There is a narrow gap between the galea and the lateral sepals which are joined for and have erect, narrow tips a further long. The sinus between the lateral sepals is V-shaped and the labellum is about long, wide and not visible outside the intact flower.

In the Northern Territory intergrading between the two subspecies is observed. The flowers are borne singly or in groups of up to 4 in leaf axils on stalks mostly long and usually densely hairy. There are 5 overlapping, egg-shaped to lance-shaped sepals which are mostly long. The sepals may be hairy or glabrous depending on subspecies.

Each drooping flower has six inner sepals which look like petals. They are bright yellow, up to a centimeter long, and reflexed back, or upwards, away from the flower center. Lying against the sepals are the smaller true petals, which are also bright yellow, curled, and hood-like. There are six stamens and a large glandular ovary.

Each small, drooping flower has six inner sepals which look like petals. They are a few millimeters in length, white, and reflexed back, or upwards, away from the flower center. Lying against the sepals are the smaller true petals, which are white or purple-tinged and flat-tipped or notched. There are six stamens and a large glandular ovary.

Plants in the genus Asterolasia are erect or prostrate shrubs. They have simple leaves arranged alternately along the stems, and are simple with smooth edges. The flowers are bisexual and have five sepals, five petals and ten to twenty-five stamens. The sepals, petals and stamens are all free from each other, the stamens slightly shorter than the petals.

Each flower has a thread-like pedicel long. The dorsal sepal is linear to oblong, long, about wide and the lateral sepals are fused to form a boat shape long, about wide below the labellum. The petals are linear to egg-shaped with similar dimensions to the lateral sepals. The labellum is long, about wide and has three lobes.

Flower of Ranunculus glaberrimus The flower is the characteristic structure concerned with sexual reproduction in flowering plants (angiosperms). Flowers vary enormously in their construction (morphology). A "complete" flower, like that of Ranunculus glaberrimus shown in the figure, has a calyx of outer sepals and a corolla of inner petals. The sepals and petals together form the perianth.

The sepals are blunt, narrow egg-shaped, long and wide, the dorsal sepal slightly longer and narrower than the lateral sepals. The petals are about long and wide. The labellum is white to yellowish, about long and wide and is basin-like with a beak-like tip and a spur about . Flowering occurs from June to August.

The dorsal sepal is egg-shaped, about long and wide, forming a hood over the column. There is a long, hair-like tip long on the dorsal sepal. The lateral sepals are long, wide and fused to each other along their sides at the base. The ends of the lateral sepals taper into long, thread-like "tails" long.

They are encased in thick, fuzzy sepals which are yellow inside and reddish or orange on the outer surface. There are no petals, but the sepals remain after the flower opens, surrounding the patch of whiskery stamens and the central pistil. The fruit is an achene a few millimeters long. The plant reproduces from seed, but very rarely.

The sepals are pale to deep mauve-pink, long, with 6 or 7 lobes with thread-like fringes. The petals are the same colour as the sepals, , broadly egg-shaped with a fringe long. The style is S-shaped, about long, and has a dense beard of hairs long. Flowering time is from late November to February.

The petals are free from each other and often different in size and shape from the sepals. The labellum is usually larger than both the sepals and petals, often lobed with a toothed or wavy edge and one or two calli at its base. There are two pairs of waxy, oval pollinia, each with a viscidium.

The flowers are wide with pale yellow sepals and petals and a golden yellow labellum. The sepals are lance-shaped to egg-shaped, long and wide. The petals are almost round, long and wide with irregular edges on the outer half. The labellum is more or less square to round, long and wide with a partly woolly surface.

Its smooth, wrinkled petioles are 1 centimeter long and have a channel on their upper side. Its solitary flowers are axillary and born on 0.5 centimeter-long pedicels. It has 3 sepals that are 5 millimeters long and come to a point at their tip. The sepals are sparsely hairy on the outside and smooth on the inside.

The sepals are egg-shaped to triangular, long, wide and turn green as they age. The petals are white or pink, about long and wide, turning green as they age. The sepals and petals do not enlarge significantly as the fruit develops. Flowering occurs from January to April and the fruit is a warty capsule about long and wide.

The sepals and petals spread horizontally or slightly downwards. The dorsal sepal is erect, linear in shape, long, wide and curves forward, forming a hood over the column and around its sides. The lateral sepals are long, about wide and the petals are long and wide. The labellum is long and wide and white with red or purplish spots.

Flowers occur at intervals along the upper stem. Each has a spherical to urn-shaped calyx of keeled sepals about a centimeter long with curving petals emerging from the tip. The calyx of sepals may be white to purple, depending on subspecies. The fruit is a long, narrow silique which may be 12 centimeters in length.

The sepals are spreading, deep pink but fade to white as they age. They are long, have 4-6 long, long, thin lobes and two hairy appendages. The petals are a similar colour to the sepals, long, erect and more or less round with small teeth on their outer edge. The style is long, with hairs near the tip.

The lateral sepals are lance-shaped but curved, long and about wide. The petals are also linear and curved, long and about wide. The lateral sepals and petals are turned back against the ovary. The labellum is green with a dark purplish blotch at its base, about long and wide on a short stalk or "claw".

The lateral sepals are long, wide and may spread widely below the flower or cross each other. The sepals have thin brown "clubs" on their ends. The petals are long, wide and curve backwards. The labellum is greenish-yellow, long, wide with many upturned, narrow teeth up to long, along its sides, often with hooks on their ends.

The lateral sepals are lance-shaped but curved, long and about wide. The petals are also linear and curved, long and about wide. The lateral sepals and petals are turned back against the ovary. The labellum is green with a dark red blotch at its base, about long and wide on a stalk or "claw" about long.

Unlike in other Northern Territory boronias, the petals are longer and wider than the sepals. The four sepals are triangular to egg-shaped, long and wide and do not increase in size as the fruit develops. The four petals are long and wide and increase in size as the fruit develops. Flowering occurs from May to February.

The bisexual white flowers are a floral tube, long, smooth inside, with long upward hairs above. The sepals spreading, long and smooth on the inside. The pedicel is hairy and the stamens may be longer or shorter than the sepals. The fruit are a dry nut thickly covered with fine hairs and forming into a densely clustered conical head.

Its oval to round flower buds are 3-5 millimeters in diameter. Its flowers have 3, broadly oval, concave sepals that are 4-7 by 3.5.5 millimeters and fused at the base. The outer surfaces of the sepals are covered in silky hairs and the insides are wrinkled. Its flowers have 6 petals arranged in two rows of three.

The lateral sepals are about long, joined at their bases before tapering to a fine tip. The petals are wider than but shorter than the lateral sepals and joined to them. The labellum is long, wide and tube-shaped with a white centre and many short, broad teeth on the edges. Flowering occurs from June to December.

The dorsal sepal is green, erect, long and wide with its edges slightly turned inwards. The lateral sepals are long, wide, spreading horizontally and stiffly near their bases but then drooping. The petals are long, and droop like the sepals. The labellum is white, long, wide with erect to spreading teeth up to long along its sides.

The inflorescence is one to twelve flowered, branching dichasially or pseudo-dichotomously, with peduncles and pedicels long. The star-shaped flowers are wide. The elliptic to oblanceolate sepals are long and wide, with three to five veins and a midrib not prominent. The glands of the sepals are linear below, becoming punctiform in the upper third to upper half.

The flowers are borne singly or in groups of up to 3 in leaf axils on a stalk long. There are 5 egg-shaped, green to purple sepals, long. The sepals are glabrous except for the margins which have long, soft hairs. The petals are long and joined at their lower end to form a tube.

Further to the middle and opposite the sepals are five stamens with the anthers initially kinked down. These suddenly flip up if the nectar-containing swelling at its base is being touched. The center of the flower is occupied by a superior ovary. The leaves and sepals carry many sticky tentacles of different sizes, that trap insects.

The floral cup is hairy, about long and the sepals are about long. The petals are about long and the stamens are long. Flowering occurs from June to July and the fruit is a capsule about in diameter with the remains of the sepals attached, but that falls from the plant when the seeds are released.

It is thick and succulent with the upper surface smooth but with ridges and furrows. Up to twenty flowers are arranged in a raceme long. The dorsal sepal is linear to narrow lance-shaped, long and wide, the lateral sepals are long and wide, the petals slightly smaller. The petals and sepals are white to cream-coloured.

The leaf is long, narrow, hollow, cylindrical and glabrous. The inflorescence is a spike or raceme with a few to many non-resupinate flowers breaking through a thin part of the leaf. The dorsal sepal is wider than two lateral sepals which are often joined. The petals are often curved, shorter and narrower than the sepals.

The lateral sepals turn downwards and suddenly taper to narrow, thread-like tips which spread apart from each other. The labellum is brown, insect-like and stands out from the lateral sepals, with many short hairs on the "head" end and longer bristles on the side of the "body". Flowering occurs from lae August to October.

The lateral sepals are long and wide, spread apart and turned downwards or drooping. The petals are long and wide and arranged like the lateral sepals. The labellum is cream-coloured or reddish, long and wide. The sides of the labellum have white or reddish teeth up to long and the tip of the labellum is curled under.

The floral cup is hemispherical, long and hairy on the upper half. The sepals are creamish-white, about long and have a fringe of long hairs. The petals are the same colour as the sepals, spreading at first, erect later, long and hairy on the outside. The style is long, gently curved and hairy near the purple-coloured tip.

The dorsal sepal and petals are fused, forming a hood or "galea" over the column, the dorsal sepal with a short point. The lateral sepals are held close to the galea and have erect, tips long. The labellum is short but just visible above the sinus between the lateral sepals. Flowering occurs in June and July.

Between three and seven pink flowers are arranged on a stalk long. The four sepals are egg-shaped to triangular, densely hairy on the back, long and wide. The four petals are long, wide and hairy on the back. The eight stamens alternate in length with those opposite the petals shorter than those near the sepals.

The dorsal sepal is erect but curves forward, long and wide. The lateral sepals are long and wide and spread horizontally near their bases but then drooping and sometimes crossing each other. The petals are long and about wide and hanging like the lateral sepals. The labellum is long and wide and white with the tip rolled under.

They are mostly long, wide and mostly glabrous. The flowers are borne in groups of up to 5 in leaf axils on flattened, sticky stalks long. There are 5 overlapping green, cream-coloured or reddish sepals which are mostly long. The sepals are spoon-shaped to lance-shaped and sticky, with hairs at least along their edges.

The sepals are also hairy, oblong to triangular, about long, the five petals long and the stamens long. Flowering mostly occurs from September to October near the coast and from November to December on the tablelands. The fruit is a capsule wide with the remains of the sepals attached and that falls the plant at maturity.

It is an annual herb producing a slender, reddish stem up to 30 centimeters tall with an inflorescence of widely spaced nodes bearing one to three flowers each. The flower has very long, pointed sepals and purple, lavender, or occasionally white flowers. The fruit is a spherical, red-spotted capsule growing deep within the long sepals.

There are 5 cream-coloured to pinkish-purple, lance-shaped to egg-shaped sepals. The sepals are sticky, mostly glabrous and usually long. The five petals are and joined at their lower end, forming a bell-shaped tube. The petal tube is lilac-coloured to mauve or pinkish purple, rarely white and is spotted with purple.

The flowers are white, pinkish in the bud stage, and wide. The sepals are hemispherical, less than long, the petals about long and the stamens are arranged in groups of about seven and long. Flowering occurs between October and January. The fruit is about in diameter with an almost flat top and with the sepals attached.

The lateral sepals spread widely or droop slightly. The petals are long and wide and arranged like the lateral sepals. The labellum is long and wide, white with red stripes, spots and blotches and the tip is curled under. The sides of the labellum have short, white-tipped teeth and there are two rows of calli in the centre.

The flowers are usually short-lived, sometimes only lasting for a few hours. The sepals are free from and more or less similar to each other. The petals are free from each other and usually narrower than the sepals. The labellum is stiffly attached to the column with a short, sac-like spur and three lobes.

The floral cup is sessile, silky hairy and long. The sepals are triangular, about long, the petals about long and the stamens about long. Flowering occurs from September to December and the fruit is a capsule about wide and silky hairy with the remains of the sepals attached, but which falls off soon after releasing the seeds.

The dorsal sepal is erect, long and wide. The lateral sepals are long and wide, spread widely and horizontally near their base but then curve downwards. The petals are long and wide and arranged like the lateral sepals. The labellum is long, wide and white but with erect, narrow red teeth up to long on the sides.

Its flowers have 3 oval sepals with bluntly pointed tips. The sepals have fine hairs on their outer surface and their margins but are hairless on their inner surface. Its flowers are 8-9 millimeters long and have 6 petals in two rows of three. The outer petals are narrowly elliptical and hairless on both surfaces.

Its solitary flowers grow on 5-11.5 by 1.2-3 millimeter pedicels slightly above axillary positions. The pedicels are hairless or sparsely hairy and have 3-8 bracts. It has 3 greenish-red to purple, oval to triangular sepals that are 6-30 by 4-12.5 millimeters. The margins of the sepals can sometimes be fused at their base.

Typically, the flowering season for the tropic croton is from July to October. It has white terminal flowers which are 4 or 5 parted and they occur at the ends of stems. Females tend to have 4 sepals with 4 petals while males only have 5 sepals and no petals. It has elongated inflorescences known as racemes.

The flower consists of three petals, alternating with three sepals. The flowers can be greenish to brownish-purple and even pure yellow at times. Its three sepals spread out and usually are a purple color on the inside. The three petals tend to be erect and somewhat twisted, varying from dark purple to yellow in color.

The sepals are pink, cream-coloured or pale yellow, sometimes white, long, with 3 lobes which have a fringe of coarse hairs. The petals are a similar colour to the sepals, long, egg-shaped many filaments on their ends. The style is long, extending beyond the petals and is curved and hairy. Flowering time differs, depending on the variety.

The flowers are borne singly in leaf axils on hairy, slightly sticky stalks long. There are 5 greenish-purple to reddish-brown, overlapping, hairy, egg-shaped to almost circular sepals which are long. The size and shape of the sepals varies with subspecies. The petals are long and are joined at their lower end to form a tube.

The flowering stem usually has sheathing bracts, which often appear leaf-like. The dorsal sepal is broad, erect, dished and often forms a horizontal hood over the column. The lateral sepals are similar to, but usually narrower than the dorsal sepal. The petals are shorter and narrower than the sepals and often have a hook-like tip.

The three sepals are about 2 centimeters long and dull tan to greenish, and the three petals about 4 centimeters in length and yellow,. Both sepals and petals age to orange-bronze. The petals are coated inside and fringed with hairs. The fruit is an angled capsule around 3 -5 centimeters long containing dark brown seeds.

The flowers are star- like in shape and have five petals. The sepals and petals are spotted with dark dots, especially on their underside, with the petals about twice as long as the oblong and acute sepals. The petals are dichotomously veined and have black bands between the veins. Each flower has twenty stamens or more.

Inflorescence scapose, with bracts subtending each flower. Flowers actinomorphic, bisexual, solitary or in pseudoumbels. Sepals 3, persistent. Petals 3, white or yellow.

Each flower has a calyx of sepals which may have a forked tip. The flower corolla is under a centimeter in length.

They are green above and white below. The flowers are solitary with five green sepals and five white petals. Fruits are unknown.

The labellum is not visible above the sinus between the lateral sepals. Flowering has been observed between mid November and early December.

It is surrounded by toothed sepals. The fruit is a flat, beaked capsule long. The seeds have a honeycomb-patterned surface.Pedicularis lanata.

The plants are bisexual, and all species have five sepals. All plants within the Bixaceae produce a red, orange, or yellow latex.

The stigmas are capitate. The cylindric-ellipsoid capsule is long and wide, equalling the sepals. The seeds are long and lack carinas.

The sepals are thin and pale, long, the petals long and the stamens are about long. Flowering occurs from September to October.

Individual flowers are large with five sepals and five pink-red petals, measuring up long. The fruits are medium-sized and woody.

Flowering occurs from July to October and the fruit is a woody capsule in diameter with the remains of the sepals attached.

The inflorescence is a tiny cluster of white-edged thin sepals and two white petals, each no more than a millimeter long.

The labellum is curved, has a reddish tip and extends above the sinus between the lateral sepals. Flowering occurs from September to December.

The ill-scented flower has three lance-shaped green or red sepals and three narrow purple or maroon petals measuring up to long.

The sepals have a bulbous shape, resembling a tulip; hence the common name. The lip is three-lobed. The column has four pollinia.

The labellum is about as long as the sepals, closely surrounds the column and has a tube-like base and two longitudinal ridges.

The sepals are about long and joined at the base and covered with rust-coloured scales on the outside. Flowering occurs in July.

The two white sepals are long. The fruit is a small bur with one seed. C. alpina can reproduce vegetatively and via stolons.

The flower has small green sepals and tiny white petals. The fruit is an array of four nutlets each lined with comblike prickles.

The fruit is a ribbed achene about half a centimeter long which may be tipped with the featherlike remains of the flower sepals.

The plant is glabrous aside from its pubescent capsules, sparsely pilose sepals, and slightly hairy pedicels. Blooming takes place from February to May.

The eight stamens are distinct. The opposite sepals are almost as long as the petals which are in male and in female flowers.

These are purple-pink and are usually 10–16 mm long. The stigma is white and has four lobes. The sepals are green.

It is sometimes confused with C. flava subsp. sylvestris, which flowers later and has sepals and petals that are yellow at the base.

Its flower stalks are up to approximately tall, carrying clusters of the white flowers, their petals and sepals similar in appearance and long.

The large (5-5½ × 2-2½ cm), more or less pendulant, star-symmetrical, hermaphrodite flowers stand individually in the axil of the leaves on a short flower stem. The calyx consists of eight to ten, free, concave, and spirally arranged sepals which gradually increase in size from outer to inner, overlap in the bud, and do not fall after flowering. These sepals are approximately oval in shape, leathery in consistency and are covered in simple one-celled straight or slightly curved hairs of 0.2-0.6 mm. Sepals and petals both contain crystals of various shapes and mucilaginous cells.

In June and July (Northern Hemisphere), the plant is topped with a raceme of many flowers, varying in colour from purple and blue, to red, yellow, or white. In most species each flower consists of five petal-like sepals which grow together to form a hollow pocket with a spur at the end, which gives the plant its name, usually more or less dark blue. Within the sepals are four true petals, small, inconspicuous, and commonly coloured similarly to the sepals. The eponymous long spur of the upper sepal encloses the nectar-containing spurs of the two upper petals.

The two species however differ in respect to the spathulate to linear petals which are shorter than sepals, fused only at the base and present inside the perianth tube; the labellum are elongate-elliptic and column broadest in the middle part in G. spatulata, whereas the petals as long as sepals with apical 1/3rd part free (rest fused with sepals) and reflexed backwards, labellum rhomboid in shape, column broadest towards the apex in G. gunatillekeorum. The only other Gastrodia species known from Sri Lanka is G. zeylanica, a taller species without any yellow colouration in its dull white flowers.

The outside of the petal tube is hairy, although not so hairy as the sepals, and glabrous inside apart from a ring of hairs around the ovary. The four stamens are about the same length as the tube, one pair shorter than the other. Flowering occurs mainly from May to October or November and is followed by fruit which is oval in shape, long and densely hairy with the sepals remaining attached. Flowering occurs mainly from June to November or December and is followed by fruit which is hairy, oval or almost spherical and has the sepals attached.

The orchid has large distinctive flowers; the sepals are rounded with the top corner pulled into a thin tail, which may extend up to 11 cm in length. Although green in colour, the sepals are covered by numerous blackish purple veins and the tails are almost completely black. The large sepals dwarf the petals and lip of the flower, which are white in colour and marked with purple and pinkish veins respectively. Dracula vampira is a large epiphyte, meaning that it does not grow in soil, it has many stems; the erect leaves are between 15 and 28 cm long.

Thelymitra cucullata is a tuberous, perennial herb with a single leaf long and wide. Between two and ten greenish cream-coloured to white flowers with purple blotches, wide are borne on a flowering stem tall. The sepals and petals are long and wide. The dorsal (top) sepal is wider and the labellum (the lowest petal) is narrower than the other sepals and petals.

The 'alba' varieties have petals and sepals of clear lime green with snow white lips. 'Albescen' varieties have sepals and petals of light green with very pastel spots and white lips with little or no color. The more common forms of c. aclandiae have sepal and petal background colors that range from clear green with dark spots to quite yellow with dark spots.

Its flowers have 3 triangular sepals that are 3-4 by 3-4.5 millimeters. The sepals are covered in dense, brown hairs on their outer surface and sparse hairs on their inner surface. Its 6 petals are arranged in two rows of 3. The yellow, oval, outer petals are 9-18 by 6.5-9.5 millimeters and come to a point at their tips.

Isabelia have unifoliated ovoid to fusiform pseudobulbs, linear or acicular leaves, and erect apical inflorescence bearing one of few flowers. The flowers have petals, sepals and labellum of the same color, which can be white, pale pink or magenta. Their sepals are widely elliptical to ovate; the petals can be narrower and oblong or wider elliptic. The labellum is entire and oblong.

The top of the stem is occupied with a very large inflorescence usually containing over 50 flowers. Each flower rises on a pedicel several centimeters long. The sepals point forward to make a cup out of the mouth of the somewhat tubular flower. The longest sepals are about a centimeter long and the spur of the flower may approach two centimeters in length.

The lateral sepals are narrow lance-shaped about long, joined for about half their length and have erect, pointed tips about long. The petals are about long, blunt and curve inwards. The labellum is egg-shaped to lance-shaped, about long and wide with slightly wavy edges, and curves upwards to almost touch the lateral sepals. Flowering occurs from July to November.

There are 5 hairy, overlapping, lance-shaped sepals which are long. The hairs on the outer surface of the sepals are yellowish and form a dense, loose mat. The petals are long and are joined at their lower end to form a tube. The petal tube is lilac-coloured to purple on the outside and white with purple spots on the inside.

The sepals are pale pink to magenta-coloured, long, with 5 or 6 hairy lobes and two small ear-like appendages on the sides. The petals are similar in colour to the sepals, long and erect with short, coarse teeth along their top edge. The style is long and hairy near the tip. Flowering time is from September to December.

The ovate obtuse sepals are 5 mm long, with the lateral sepals larger than the dorsal sepal. The linear petals are also 5 mm long. As with other members of the genus Epidendrum, the lip is adnate to the column to its apex. The lip is heart- shaped where it diverges from the column, ovate, and obtuse at the apex.

Like other irises, it has 2 pairs of petals, 3 large sepals (outer petals), known as the 'falls' and 3 inner, smaller petals (or tepals), known as the 'standards'. The sepals can be deeply veined dark purple with a yellow-white signal (centre). The standards are so small, that they are reduced to bristles. Which gives the flower, a flat, three petal appearance.

Galium obtusum has white colored petals with green sepals, in total the flower has four petals that fuse with sepals that collectively look cup shaped. This flower also has four black tipped stamens, two styles and is considered to have radial symmetry. The ovary position of this flower is epigenous and its flower inflorescence is a dichasium. The root structure is adventitious.

The toothed oval leaves are under 2 centimeters long. The inflorescence is a cluster-like raceme of flowers, the top ones sterile. The fertile flowers on the lower raceme have calyces of bristly purple-green sepals under a centimeter long with flaring purple petals at the tip. The sterile flowers at the top of the raceme have narrow, elongated, hairless purple sepals.

The floral cup is covered with silky hairs, long and sessile or on a very short pedicel, and the sepals are triangular and covered with soft hairs. The petals are more or less round and there are thirty to forty stamens. The fruit is a capsule that is fleshy and succulent at first, long and wide with the remains of the sepals attached.

The dorsal sepal is about long and wide and the lateral sepals are slightly longer and spread apart from each other. The petals are a similar length to the sepals but narrower. The labellum is long and about wide and has three lobes. The middle lobe is long and but the side lobes are only about half as long and wide.

The lateral sepals are long, wide, spreading horizontally near their bases but then drooping. The petals are similar to the sepals but slightly shorter and narrower. The labellum is white, long, wide with erect to spreading teeth up to long along its sides. The middle part of the labellum has the longest teeth on its edge, the teeth red with hooked white tips.

The dorsal sepal and petals are fused, forming a hood or "galea" over the column, the dorsal sepal with a short point on its end. The lateral sepals have erect, thread-like tips long. The sinus between the lateral sepals bulges platform-like and is usually dark brown. The labellum is curved, blackish, blunt, long, about wide and just visible above the sinus.

Thelymitra hiemalis is a tuberous, perennial herb with a fleshy, channelled, dark green, linear to lance-shaped leaf long and wide with a reddish base. Up to five mauve or blue flowers wide are borne on a flowering stem tall. The sepals and petals are long and wide. The sepals are often greenish and the petals, including the labellum have irregular, darker spots.

Stipules are absent. The many small flowers of Spiraea shrubs are clustered together in inflorescences, usually in dense panicles, umbrella-like corymbs, or grape-like clusters. The radial symmetry of each flower is five fold, with the flowers usually bisexual, rarely unisexual. The flowers have five sepals and five white, pink, or reddish petals that are usually longer than the sepals.

The flowers have both male and female reproductive structures. Its flowers have 3 small sepals, 1 by 0.5 millimeters. The sepals are smooth on their upper surface and densely hairy on their lower surface. Its 6 petals are arranged in two rows of 3. The outer petals are 2 by 1.5 millimeters with smooth upper surfaces and densely hairy lower surfaces.

Sometimes rue-anemone sepals are pale to dark pink, whereas false rue-anemone sepals are always white. False rue-anemones have a small cluster of no more than six green carpels in the center of the flower, while rue-anemones sometimes have as many as fifteen. False rue-anemones usually have deep clefts in their leaves, while rue-anemones do not.

The flowers of this species are the largest in the genus, and the petals are somewhat larger than the sepals. The five sepals are thick and are deflected when the flowers have opened. The five white petals are approximately long and wide and are set on the edge of a broad hypanthium. Ten free, white, long filaments are tipped by long anthers.

The sepals and petals are curved and warty, the sepals long and wide, the petals a similar length but only about half as wide. The labellum is about long, wide and curved with three lobes. The lobes are triangular, the middle lobe with a white ridge near its base and long white hairs on its edge. Flowering occurs from December to May.

There is a wide gap at each side of the flower between the petals and lateral sepals. The lateral sepals are erect with a tapering tip long no higher than the galea and there is a curved sinus with a deep notch between them. The labellum is long, about wide, curved and projects through the sinus. Flowering occurs from March to October.

The dorsal sepal is much longer than the petals and gradually tapers to a point. There is a wide gap between the galea and the lateral sepals. The lateral sepals are erect and have narrow tips long and a deep V-shaped sinus between them. The labellum is long, wide, brown and curved and half of it protrudes through the sinus.

7 mmby 1.5–2 mm wide, white to pink and silky hairy above, green and hairless below. The male flowers have small and obtuse sepals and papery petals and are about 0.3 mm long. The female flowers have tiny sepals which form a skirt on the summit of the ovary and have no petals. It flowers from January to May.

The flowers have short stems that hold the fully opened flowers above the foliage. The involucral bracts have three leaflets like the leaves. The showy rounded flowers have 4-15 carpels surrounded by many yellow stamens in the middle, and a cup of 5 to 10 white to pinkish-lilac petal-like sepals. The sepals are about long and the filaments long.

Leaves have villous hairs and their margins are pinnatifid or dissected. Plants flower briefly mid-spring to mid-summer, usually soon after the ground is exposed by melting snow. The flowers are composed of five to seven sepals (sometimes called tepals), normally white or soft purple, also mixed white and blueish purple, one flower per stem. The sepals are long and wide.

Plants in the genus Acradenia are evergreen trees, sometimes shrubs with trifoliate leaves arranged in opposite pairs and lacking domatia. The flowers are arranged in panicles in leaf axils or on the ends of branchlets. The flowers are bisexual usually with five (rarely six) sepals and petals. The sepals are long, joined at the base and remain attached to the fruit.

The flowers are unisexual. Its flowers have 3 sepals, 0.8-1 by 0.5 millimeters. The sepals are smooth on their upper surface, hairy on their lower surface, and have fine hairs on their margins. Its 6 petals are arranged in two rows of 3. The outer elliptical petals are 1.5 by 1-1.5 millimeters with smooth upper surfaces and densely hairy lower surfaces.

The sepals are spreading and creamy-white, long, with about 6 hairy lobes. The petals are a similar colour to the sepals, egg-shaped, long, joined for about of that length and have irregular teeth around their edge. The style is long, straight with hairs just below its tip. Flowering time is mainly from August to October, sometimes in other months following rainfall.

The dorsal sepal curves forward and downward with a thread-like tip long. The lateral sepals are held closely against the galea with erect, thread-like tips long. The sinus between the lateral sepals bulges forward and has a V-shaped notch in the centre. The labellum is long, about wide, dark brown, slightly curved and protrudes above the sinus.

The dorsal sepal is egg-shaped, long and about wide. The lateral sepals are a similar size to the dorsal sepal and are joined to each other for half their length then spread widely apart. The petals are about the same size as the sepals. The labellum is long, about wide with a pouch at its base and its tip curved downwards.

The scented flowers are arranged in round or corymb-like groups, each flower on a stalk long. The floral cup is shaped like a hemisphere, about long and glabrous. The sepals are usually pink, rarely white, about long and spreading with 6 to 10 feathery lobes. The petals are a similar colour to the sepals, spreading, almost round in shape and long.

Its flowers are solitary and appear before young leaves. Each flower is on a thin, lightly hairy pedicel 2-5.7 centimeters long. Its flowers have 3 sepals that are 1-2 by 3-5.5 centimeters with wavy, densely hairy margins. The sepals curve backwards and are green or red with green veins. Its 6 petals are arranged in two rows of 3.

Korupodendron is a monotypic genus of flowering plants in the family Vochysiaceae. The genus is represented by the single species Korupodendron songweanum. It was first discovered in Korup National Park in northwestern Cameroon and named in honor of Dr N. Songwe. Korupodendron differs from the other African genus Erismadelphus by having three conspicuous and petaloid sepals and two inconspicuous sepals.

They are roughly flat-topped in shape, dichotomously branched, and bearing numerous flowers. The flowers are a greenish or pale yellow, fragrant, and 5 to 10 mm in diameter. They are bisexual and pentamerous, with the sepals and petals being completely free. The sepals and petals are serrate; the petals conspicuously so, often with each tooth tapering to a short hair.

Its 3 rounded sepals are fused at their base and have a blunt, elongated rigid tip. The sepals are covered in tawny, matted hairs. Its flowers have 6 petals arranged in two rows of three. The oval to lance-shaped outer petals are 2.3-4.3 by 1.2-2.3 centimeters, have a shallow tapering tip and a short broad claw at base.

The flower has 5 oblong, green sepals and 5 white petals. The sepals and petals are 4-6mm in length and form a fringe. The base of the flower is a rich purple with 5 stamens, an ovary, and a branched style. The styles bend backward and the anthers, which are located on top of the styles, have a very distinct head.

The pedicels have up to 4 bracts that are 2-4 millimeters long at their base. Its triangular to oval sepals are 7 by 4 millimeters with pointed tips. The sepals are fused over a short portion of their base. The oval to lance-shaped outer petals are 10–14 by 4–6 millimeters with pointed to tapering tips and rounded bases.

The flowers are pink and arranged singly or in groups of three in leaf axils on a stalk long. The four sepals are triangular to narrow egg-shaped, long but enlarge as the fruit develops. The four petals are long wide but enlarge as the fruit develops. The eight stamens alternate in length with those opposite the sepals slightly longer.

The lateral sepals are triangular, about long, wide and curved with their upper edge partly overlapping the dorsal sepal. The petals are egg- shaped, about long, wide and are surrounded by the sepals. The labellum is long, about wide and lacks an obvious callus. Flowering occurs from December to January but only after a hot or late fire the previous summer.

The dorsal sepal curves forward and ends with a short point. The lateral sepals are erect with thread-like ends long with their tips bent forwards. The lateral sepals are held closely against the galea and there is a broad, flat, platform-like sinus between their bases. The labellum is long, about wide and brown and slightly protrudes above the sinus.

Dendrobium affine is an epiphytic herb with cylindrical green pseudobulbs long and wide with between two and ten leaves on its upper half. The leaves are long and wide. The flowering stem is long and bears between two and twenty white flowers long and wide. The sepals are long, and wide with the lateral sepals slightly wider than the dorsal sepal.

Up to three pale to bright pink, woolly-hairy flowers are arranged in leaf axils on a peduncle long, the individual flowers on a pedicel long. The four sepals are egg-shaped to triangular, long, wide. The four petals are long and wide. The eight stamens alternate in length with those near the sepals slightly longer than those near the petals.

The sepals are more or less spreading, long, pink to magenta-coloured with 6 to 8 feathery lobes. The petals are a similar colour to the sepals, about long, egg-shaped with a few short teeth near the tip and are slightly hairy on the outside. The style is long, curved and hairy near the tip. Flowering time is from October to January.

The lateral sepals are oblong to lance- shaped with the narrower end towards the base, long and about wide. The petals are linear, long and wide and curved. The lateral sepals and petals are turned back against the ovary. The labellum is light green with a dark purplish blotch at its base, about long, wide on a short stalk or "claw".

The flowers are long, wide. There is a wide gap at each side of the flower between the petals and the lateral sepals. The lateral sepals have a tapering tip, long and there is a deeply notched sinus between them. The labellum protrudes from the flower and is long, about wide, curved, dark- coloured and covered with short, bristly hairs.

Ecology, 62, 1137–47. The rhizomes are often consumed by muskrats. The flower is solitary, terminal, held above the water surface; it is hermaphrodite, 2–4 cm diameter, with five or six large bright yellow sepals and numerous small yellow petals largely concealed by the sepals. Flowering is from June to September, and pollination is entomophilous, by flies attracted to the alcoholic scent.

The sepals and petals are long and wide and slightly turned backwards. The labellum is long and mauve to maroon. There are two diverging linear, hairy keels near the base of the labellum and a band of mauve hairs about long along its midline. A form with sepals and petals that are completely dark maroon occurs in some parts of its distribution.

If either the petals or sepals are entirely absent, the perianth can be described as being monochlamydeous. Both sepals and petals may have stomata and veins, even if vestigial. In some taxa, for instance some magnolias and water lilies, the perianth is arranged in a spiral on nodes, rather than whorls. Flowers with spiral perianths tend to also be those with undifferentiated perianths.

There are 6-8 sepals on the flower all ranging from 1.2mm-2mm, these are tomentose (covered densely with hair at youngness), but at maturity they are pilose (the hair elongates and softens forming a plush surface). The stamen is short, with a filament averaging at only .28mm in length. The anthers, like the mature sepals, are also covered with long, fine hairs.

The dorsal sepal is long, about wide and turns downwards. The lateral sepals are a similar length, about wide and spread apart from each other. The petals are a linear in shape and similar in size to the sepals. The labellum is more or less round to heart-shaped, long and wide with the tip folded backwards and smooth edges.

The sepals are about long and wide, the dorsal sepal turned stiffly downwards and the lateral sepals spread apart from each other with their tips turned downwards. The petals are about long and wide with their tips turned down. The labellum is horseshoe-shaped, long and about wide with a blunt tip and smooth edges. Flowering occurs between January and April.

At the mouth the sepals spread into lobes that are shorter than the tube. There are no petals, but the lobes of the sepals are quite colourfully petal-like in many species. The ovary is ovoid with a single loculus containing a solitary ovule. The style is lateral, bearing a mop-like stigma that fills the mouth of the calyx-tube.

The flowers are borne in groups of two to five in leaf axils on hairy stalks, usually long. There are 5 overlapping, sticky, lance-shaped to egg-shaped sepals which are different sizes but mostly long. The sepals are green to reddish-brown and are covered with glandular hairs. The petals are long and joined at their lower end to form a tube.

The sepals are about long, spreading and pink, fading to white and have between 3 and 5 hairy lobes. The petals are a similar colour to the sepals, long, erect, egg-shaped, pimply on the outer surface and have a hairy fringe. The style is about long, curved and hairy near the tip. Flowering time is from February to June.

The floral cup is covered with long, silky hairs, about long tapering to a short pedicel. The sepals are also hairy, long triangular and long. The five petals are about long and the stamens about long. Flowering mainly occurs in November and the fruit is a capsule wide with the remains of the sepals attached and that remains on the plant at maturity.

Its sepals are united to form a calyx with 3 triangular lobes that are 10 by 10 millimeters and come to a tapering point. The outer surfaces of the sepals are covered in rust-colored woolly hairs. Its flowers have 6 petals arranged in two rows of 3. The thick, oval, outer petals have margins that touch but are not united.

The dorsal sepal is erect, long and wide and the lateral sepals are a similar size. The petals are long and wide and spread fan-like with the lateral sepals. The labellum is long, wide and has three distinct lobes. The lateral lobes usually have three red stripes and the middle lobe has between four and ten short teeth on the sides.

The dorsal sepal is erect, the lateral sepals are wide and the petals are wide. The labellum is white, long with narrow teeth long and the column is and wide. The relatively narrow sepals and petals and the small labellum, together with the distribution of this subspecies, distinguish it from others in the same species. Flowering occurs from August to mid-September.

The lateral sepals are about the same size as the dorsal sepal, held horizontally near their bases then turn downwards and droop. The petals are long, wide and arranged like the lateral sepals. The labellum is long, wide and creamy-white with pale red lines and spots. The sides of the labellum have short, blunt teeth and the tip is curled under.

The flowers are borne singly in leaf axils on a glabrous stalk long which has 5 distinct ribs, especially near the outer end. There are 5 mostly glabrous, lance-shaped sepals which are long. The sepals are often tinged purple and are triangular in cross-section. The petals are long and are joined at their lower end to form a tube.

Taeniophyllum hasseltii is a leafless, epiphytic herb that forms small clumps. It has a stem about long and flattened silvery grey photosynthetic roots about wide, up to long and pressed against the substrate. Pale yellow, tube-shaped flowers long and wide open one at a time. The sepals and petals are about long and wide, the petals slightly narrower than the sepals.

The lateral sepals are long, wide and spread widely, turning slightly downwards. The petals are long, wide and arranged like the lateral sepals. The labellum is long, wide and pale pink near its base but darker pink near its edges and tip. The sides of the labellum have linear teeth up to long and the tip of the labellum is curled under.

Caladenia rigida, commonly known as the stiff spider orchid, or white spider- orchid is a plant in the orchid family Orchidaceae and is endemic to South Australia. It is a ground orchid with a single hairy leaf and one or two white flowers with dark glandular tips on the sepals and fine reddish-brown lines along the sepals and petals.

The dorsal sepal is erect, long and wide. The lateral sepals are long and wide and the petals are long and wide. The lateral sepals and petals are linear to lance-shaped in the lower quarter of their length, then suddenly taper to downcurved, narrow ends. The labellum is white, long and wide with narrow teeth up to long on the sides.

They grow in the upper leaf axils and have ovate to lanceolate sepals, greenish-white petals of about the same length, and three styles. The fruit is a capsule larger than the sepals and superficially resembling a pea. In pistillate flowers the stamens are undeveloped while in staminate flowers, the capsules are poorly developed. There are two subspecies, H. p.

The ends of the sepals and petals have a narrow "tail" which sometimes has yellowish glands. The sepals and petals droop downwards. The labellum is broad with a few short, blunt teeth on its edges and is about long and wide. It is greenish with a maroon tip and has six crowded rows of swollen, club-shaped calli along its centre.

The lateral sepals are linear to lance-shaped, wider than the dorsal sepal, spread widely and taper to a point. The petals are a similar shape to the sepals but narrower and about long. The labellum is brownish-red with a smooth edge and curves downward near the tip. There are densely crowded, tall, red-tipped calli in the centre of the labellum.

Orchids in the genus Erythrorchis are leafless mycotrophic, climbing herbs that cling to surfaces with small, unbranched roots from the main stems. They usually cling to tree trunks. Densely crowded, resupinate flowers are borne on a highly branched flowering stem. The sepals and petals are fleshy, often fused to each other and spread widely, the petals narrower than the sepals.

The back surface of the sepals and petal is a covered with glandular hairs and is a lighter shade of pink. The dorsal sepal is erect, oblong to lance-shaped, long and wide. The lateral sepals are long, wide and spread widely. The petals are long and wide, spread widely and sometimes have a few irregular teeth on the sides.

The sepals and petals are relatively short, greenish-white with red lines and dark glandular tips. The dorsal sepal is erect and the lateral sepals and petals usually curve downwards and cross each other. The labellum is pale white, relatively broad and has smooth to slightly toothed edges. Along its centre line there are two rows of white or pale red-tipped calli.

Orchids in the genus Plectorrhiza are epiphytic or lithophytic, monopodial herbs with long, thick, tangled roots mostly growing in the air. They have two or more short, leathery leaves on each shoot. There are several small, resupinate flowers on a short, thin flowering stem. The sepals and petals are similar to and free from each other, the petals slightly shorter than the sepals.

The floral cup is broad top-shaped, long, ribbed and glabrous. The sepals are lemon-yellow, long, with 6 to 8 hairy lobes and do not change colour as they age. The petals are a similar colour to the sepals, , their main body is long and they have long, pointed, finger-like appendages. The style is long, straight and glabrous.

The stem is lined with pairs of oval leaves each up to about 2 centimeters long. The inflorescence is an umbel-shaped array of several flowers each on an arching or erect pedicels. The flower has five pointed green sepals each no more than 3 millimeters long. There are occasionally tiny white petals within the calyx of sepals, but these are generally absent.

The flowers are star-like, creamy-white and pink, sometimes lemon and pink. The floral cup is shaped like half a sphere, about long, smooth but hairy near its base. The sepals are long, with 3 lobes which have a fringe of coarse hairs. The petals are a similar colour to the sepals, long, egg-shaped with many filaments on their ends.

Petals bright? yellow, 10-12 x 4-5 mm, 3-4 x sepals, oblong-lanceolate, unequally retuse; laminar glands linear to punctiform. Stamens c.

The reddish-brown fruit is a pome, diameter, with wide-spreading persistent sepals around a central pit, giving a 'hollow' appearance to the fruit.

The inflorescence branches and holds up to 25 knobby flowers on each branch. The flower has yellowish petals within its pink-tinged green sepals.

Flowers are white, they have 4 sepals and 4 petals. Which is then followed by a white or red fruit, which contains one seed.

The sepals and petals are tapered and curve downwards. The labellum is long, wide with two orange calli. Flowering occurs between May and August.

Flowering occurs from late September to early November. This subspecies differs from the other two subspecies in having sepals that are more than wide.

Each flower is roughly half a centimeter long and surrounded by a calyx of sepals which are coated densely in long, straight, white hairs.

Flowering occurs mainly from July to November and is followed by fruit which is a curved oval shape, long and has the sepals attached.

The inflorescence bears several white or green-tinged flowers with tubular throats up to 4 centimeters long, their bases enclosed in green-striped sepals.

The four petals are about long. The eight stamens alternate in length with the four near the petals longer than those near the sepals.

The pale-flowered western larkspur (ssp. pallescens), which has white, pink, or light blue sepals, occurs in the Coast Ranges.ssp. pallescens. Flora of North America.

Petioles are about 75% as long as the blades. Pedicels are . Sepals are and have five triangular teeth. The flowers are yellow with red spots.

Center for Plant Conservation. This larkspur has white sepals and blue upper petals. It is likely a hybrid between Delphinium menziesii and D. trolliifolium.Delphinium pavonaceum.

Stems are generally prostrated except for the upright flowering stalk. Leaves are up to 15 mm. Sepals are green, tinged with purple. Petals are white.

Trees or shrubs with pale straw coloured twigs. Leaves membraneous and with prominent veins. Flowers axillary, medium to large. Sepals 3, valvate, connate at base.

Each flower has triangular sepals with tiny oval-shaped yellow petals between them. The center of the flower contains twenty stamens and a few pistils.

Calochortus cernuus is a bulb-forming herb up to 40 cm tall, usually unbranched. Flowers are nodding (hanging) with dark brown sepals and purple petals.

Its flowers are axillary. Its oval-shaped sepals are 3.4 millimeters long. Its corolla are 6.8 millimeters long. It has numerous stamens and 3 styles.

The flower has no petals and is composed of a calyx of fleshy, rounded sepals. The fruit is an utricle that grows within the calyx.

Sepals are green, up to 7 mm (0.3 inches) long, tipped with awns. Petals are white, slightly long than the sepals.Small, John Kunkel. 1907. Geraniaceae.

Flowering occurs between August and November and is followed by fruit which are urn-shaped capsules with an obvious bulge and with the sepals remaining.

Thelymitra magnifica is a tuberous, perennial herb with a single erect, flat, leathery, lance-shaped to egg-shaped leaf long and wide. Between two and eight dark golden brown flowers with yellow streaks and blotches, wide are crowded on a flowering stem tall. The sepals and petals are long and wide. The labellum (the lowest petal) is narrower than the other petals and sepals.

The dorsal sepal is narrow egg-shaped to lance-shaped, long, about wide and turned downwards. The lateral sepals are linear to lance-shaped and about long. The petals are linear, about long, wide and spread widely apart from each other. The labellum is broadly lance-shaped to egg-shaped, about long, turns upwards with its tip projecting between the lateral sepals and has a wavy edge.

Diagram showing the parts of a mature flower. In this example the perianth is separated into a calyx (sepals) and corolla (petals) A tepal is one of the outer parts of a flower (collectively the perianth). The term is used when these parts cannot easily be classified as either sepals or petals. This may be because the parts of the perianth are undifferentiated (i.e.

A Lilium flower showing the six tepals: the outer three are sepals and the inner three are petals. Undifferentiated tepals are believed to be the ancestral condition in flowering plants. For example, Amborella, which is thought to have separated earliest in the evolution of flowering plants, has flowers with undifferentiated tepals. Distinct petals and sepals would therefore have arisen by differentiation, probably in response to animal pollination.

Thelymitra tigrina is a tuberous, perennial herb with a single leaf long and wide. Between two and fifteen yellow, cup-shaped flowers with many dark brown spots, wide are borne on a flowering stem tall. The sepals and petals are long and wide. The column is a similar colour to the sepals and petals, long, about wide and has short, white, pimply arms on the sides.

Thelymitra yorkensis is a tuberous, perennial herb with a single erect, flat, leathery, lance-shaped to egg-shaped leaf long and wide. Between two and twelve cinnamon scented, orange-coloured flowers with reddish brown edges, wide are crowded on a flowering stem tall. The sepals and petals are long and wide. The labellum (the lowest petal) is narrower than the other petals and sepals.

The petals are a similar size and shape to the sepals but lack glandular ends. The petal and sepals spread widely, sometimes drooping near their ends and are a creamy-yellow colour, often with red streaks. The labellum is shiny, yellowish with a maroon tip and curves forward, with the tip rolled under at the end. It is egg-shaped, long and about wide.

Trees in the genus Flindersia have simple or pinnate leaves with up to sixteen leaflets, the side leaflets arranged in opposite pairs. The flowers are arranged in panicles at the ends of branchlets or in upper leaf axils and have five sepals and five petals. The flowers are bisexual, or sometimes only have stamens. There are five stamens opposite the sepals, alternating with five staminodes.

The sepals tend to stay green for a longer time than the petals. As the flower ages further it goes from white to yellowish and then from orange to brown as it begins to wilt. As the wilting progresses the dorsal sepal bends down and then the lateral sepals bend inward with the lip remaining fairly stationary. Finally the entire flower closes in on itself.

The dorsal sepal and petals are fused, forming a hood or "galea" over the column. The dorsal sepal is long and curves forward with a tapering tip. The lateral sepals are erect, have narrow tips which are higher than the galea and there is a wide gap between them and the galea. The labellum is curved, reddish-brown and protrudes above the sinus between the lateral sepals.

Its flowers have 3 brown, oval sepals that are 4-6 by 3-3.5 millimeters. The outer surface of the sepals is densely hairy, while their inner surfaces is hairless except at the tips. Its 6 petals are arranged in two rows of 3. The white, oval to lance-shaped outer petals are 17-21 by 8.5-10.5 millimeters and come to a point at their tip.

Memoria Mark Aldridge. The flowers somewhat resemble those of A. leonis. Additionally, the hybrid combines the traits controlling the flower's post-pollination changes. In the case of A. eburneum the flowers age such that the labellum curls inward with the sepals and lateral petals remaining mostly stationary whereas in the case of A. sesquipedale both the sepals and petals move except for the labellum.

The lateral sepals are long and wide and curve stiffly downwards. The petals are long, about wide and arranged like the lateral sepals. The labellum is long, wide and creamy-white with red lines and spots. The sides of the labellum have short, blunt teeth and there are two rows of anvil-shaped, cream-coloured calli which sometimes have red tips along its mid-line.

The lateral sepals are long and wide and turn stiffly downwards but do not clasp the ovary. The petals are long, wide and arranged like the lateral sepals. The labellum is long, wide and greenish-cream with pale red lines. The sides of the labellum lack teeth but are rolled under and the tip has a thickened, red, V-shaped glandular tip and is curled under.

The hooded dorsal sepal is long, wide and covers and hides most of the rest of the flower. The lateral sepals and petals are long and similar in appearance to each other. The labellum is much smaller than the petals and lateral sepals and is undivided, with its margins turned inwards. The thin column is wider at the base and has fused wings along its body.

Its flowers have 3, triangular, green-brown sepals that are 2-3.5 by 2.5-3 millimeters. The outside of the sepals are densely hairy, while their inner surfaces are smooth. Its 6 petals are arranged in two rows of 3. The white to cream-colored, lance-shaped to oblong, outer petals are 12.5 by 6 millimeters, and come to a point at their tip.

The floral cup is top-shaped, about long, 5-ribbed and glabrous with rounded appendages which merge with the hypanthium. The sepals are long, pink to magenta-coloured and have between 6 and 7 feathery lobes. The petals are a similar colour to the sepals, long, erect, egg-shaped and with a fringe a further long. The style is long, curved and hairy near the tip.

The four sepals are triangular to egg-shaped, long, wide and densely hairy on the lower side. The four petals are long and but increase in size as the fruit develops. The eight stamens alternate in length with those near the sepals longer than those near the petals. Flowering occurs from August to October and the fruit is a hairy capsule long and wide.

Caladenia necrophylla is a terrestrial, perennial, deciduous, herb with an underground tuber. Its leaf is hairy, dark green with reddish-purple blotches near its base, linear to lance-shaped, long and wide. A single yellowish-green flower with red lines along the sepals and petals and about across is borne on a stalk tall. The sepals and petals have light brown club-like glandular tips long.

Habenaria macraithii is a tuberous, perennial herb with between seven and eleven scattered bluish green leaves, long and wide. Between fifteen and twenty five green flowers, long and wide are borne on a flowering stem tall. The dorsal and lateral sepals are long and about wide, the lateral sepals are narrow egg-shaped and spread widely apart from each other. The petals have two lobes.

The lateral sepals are parallel and close together below the flower and are long, wide. They point downwards at their base but then curve upwards in front of the labellum. The petals are slightly shorter and narrower than the sepals and point downwards at an oblique angle. The labellum is loosely hinged to the column, long, wide, green to yellowish with a dark purple tip.

They are , and there are around 2 times as many of them as sepals. They are rounded and their apiculus is short, and they are acute to obtuse. Their laminar glands are pale and linear, and their marginal glands are absent or black, and there are one to around seven of them. There are around 65–125 (0.9 times as many sepals) stamens that are long.

Thelymitra cyanea is a tuberous, perennial herb with a single erect, fleshy, channelled, linear leaf long and wide. Up to five bright blue flowers with darker veins, wide are borne on a flowering stem tall. There are usually and two bracts on the flowering stem. The sepals and petals are long and wide but the lavellum (the lowest petal) is larger than the other petals and sepals.

The dorsal sepal curves forward with a pointed tip. There is a wide gap between the galea and the lateral sepals. The lateral sepals are swept back, have thread-like tips 13–18 mm long and a bulging sinus between them. The labellum is 12–14 mm long, about 3 mm wide, dark green to brown, blunt, and curved and protrudes above the sinus.

Caladenia toxochila is a terrestrial, perennial, deciduous, herb with an underground tuber and a single, sparsely hairy leaf, 50–120 mm long and 10–15 mm wide. One or two flowers 15–20 mm wide are borne on a spike 80–200 mm high. The sepals and petals are yellowish-green with central red stripes. The sepals have thin, club-like glandular tips, 1–7 mm long.

When in bloom, pedicels are about 4cm long, and they grow to about 9.5 cmby the time of fruiting. Each flower has five (rarely six or seven) prominent yellow sepals which turn more or less green when dried. The sepals are broadly obovate or obovate, and rarely broadly elliptic, 1.7 to 2.5 (rarely 3)cm by 1.2 to 2.5 (rarely 2.8)cm, with rounded or truncate apices.

The floral cup is covered with flattened, silky hairs and about long on a pedicel less than long. The sepals are triangular, long, the petals about long and the stamens less than long. Flowering mainly occurs from October to November and the fruit is a hemispherical capsule wide with the remains of the sepals attached, but which fall from the plant soon after the seeds are released.

The flower is usually dark red to maroon-coloured, sometimes greenish, and has a hot metal scent. The dorsal sepal is long, about wide and tapers to a blackish glandular tip. The lateral sepals are similar to the dorsal sepal but wider and spread apart from each other. The petals are long, wide and have a terminal gland similar to that on the sepals.

There is a wide gap at each side of the flower between the petals and the lateral sepals. The lateral sepals curve forwards, have a tapering tip, long and there is a deeply notched sinus between them. The labellum protrudes from the flower and is long, wide, curved, blunt, green and brown and covered with short, bristly hairs. Flowering occurs from March to December.

The flowers are light green with reddy-brown spots. Sepals are similar, usually concave, oblong-elliptic, 4.5-5 × 2.5–3 mm, apex obtuse. Petals are somewhat obovate, slightly smaller than sepals, tip blunt, lip with an epichile and a saccate hypochile. Epichile is nearly suborbicular, about 3 × 5 mm, adaxially hairless, with a central cushion, near base with 2 conic calli, entire, obtuse at apex.

The lateral sepals spread apart below the flower and are long, wide. The petals also spread widely, are slightly shorter and narrower than the sepals and have their tips rolled inwards. The labellum resembles the body of a wingless female thynnid wasp and is stiffly hinged to the column. The labellum has a dummy insect abdomen, long, wide and curved with many maroon-coloured hairs and calli.

The dorsal sepal is the same length as the petals and curves forward with a pointed tip. There is a gap between the galea and the lateral sepals. The lateral sepals are erect and have thread-like tips 15–20 mm long and a slightly bulging V-shaped sinus between them. The labellum is long, about wide, green or brown and curved and protrudes above the sinus.

The sepals are white or pink to magenta-coloured, long, with 6 to 8 hairy lobes. The petals are the same colour as the sepals, about , egg-shaped and erect with pointed teeth around their edges and hairs on the outside surface. The staminodes are longer than the stamens, curve inwards and are hairy. The style is long, curved with many short hairs near its tip.

The sepals and petals spread widely apart from each other with their tips turned outwards. The sepals are long, about wide and the petals are a slightly longer but narrower. The labellum is long, about wide, curved and yellow with purple markings. The labellum has three lobes, the side lobes erect and blunt and the middle lobe with wavy edges and three ridges along its midline.

The sepals are about long, erect, pink, cream or pale yellow with 3 or 4 feathery lobes. The petals are a similar colour to the sepals, about long, egg-shaped and hairy on the outside with a slightly ragged tip. The style is long, straight and hairy near the tip. Flowering time is usually from January to May, but has been recorded in most months.

Oval bracts at the base of pedicels are 1-1.5 by 1 millimeters while those at top are 1-1.5 by 1-1.5 millimeters. Its oval to triangular sepals are 1.5-2.5 by 2.5-3 millimeters. The outer surfaces of the sepals have sparse, fine, brown hairs; the inner surfaces are hairless or nearly so. Its flowers have 6 petals in two rows of three.

The dorsal sepal is erect and curved forward, linear but tapered, long and about wide. The lateral sepals are linear, long, wide and curve forwards or downwards. The petals are similar in size and shape to the lateral sepals and curve forwards or slightly downwards. The labellum is oblong, long and wide and slopes slightly downwards with a few serrations near its pointed tip.

The floral cup is top-shaped, about long, has 5 ribs, large green appendages and is glabrous and wrinkled. The sepals are about long, dark magenta to maroon and spreading, with 8 to 11 feathery lobes. The petals are the same colour as the sepals, about long and erect with a fringe a further long. The style is about long, hairy and bent near the tip.

Species of Clivia are found only in South Africa and Swaziland. They are typically forest undergrowth plants, adapted to low light (with the exception of C. mirabilis from the Western Cape). Clivia shares common features with the other members of the subfamily Amaryllidoideae. Individual flowers have three sepals and three petals, all very similar (although the sepals are typically narrower than the petals) and collectively called tepals.

The flowers are surrounded by leaf-like prophylls long and wide and the sepals are egg-shaped to triangular, about long, wide and green and burgundy-coloured. The petals are green, about long and wide. The sepals and petals do not enlarge significantly as the fruit develops. Flowering occurs between March and September and the fruit is a glabrous capsule about long and wide.

The free sepals and petals are well-developed and star-symmetrical. The broadly inverted egg-shaped petals are white, reddish pink or bright purple and are overlapping in a circle in the bud. Inside the petals are five stamens that sit opposite the sepals and below the ovary. The filaments are free, line-shaped, topped by anthers that are connected with the filament near their base.

The dorsal sepal is linear to elliptic, long, about wide and the lateral sepals are a similar length but lance-shaped and slightly narrower. The petals are slightly shorter than the sepals and all are free from each other with their tips strongly curved backwards. The labellum is dark purplish red and projects forwards, long, wide with a narrow central band of mauve hairs up to long.

The flowers are usually borne singly in leaf axils on a hairy stalk which is usually long. There are 5 narrow-triangular, green sepals which are mostly long. The outside surface of the sepals has similar yellowish hairs to those on the leaves while the inside surface has mostly glandular hairs. The petals are long and are joined at their lower end to form a tube.

The dorsal sepal curves forward and is long and about wide. The lateral sepals are long, wide, and curve downwards. The petals are long and wide and arranged like the lateral sepals The labellum is long, wide and white or cream coloured. The sides of the labellum curve upwards and have erect teeth up to long on their sides and the tip of the labellum curves downwards.

Bulbophyllum globuliforme is an epiphytic herb with pale green, more or less spherical pseudobulbs that are in diameter. Each pseudobulb has a single papery, scale-like leaf long. A single cream-coloured flower about long and wide is borne on a thread-like flowering stem long. The sepals and petals spread widely, the sepals about long and wide, the petals about long and wide.

The pseudobulb bears one or two small leathery or fleshy leaves. The flowers are small (or larger, in the case of Hormidium sophronitis), born on a short raceme. The floral bracts are small. The sepals are of equal lengths, partially closed or completely open, the dorsal sepal free at the rear and the lateral sepals adnate to the base of the column forming a small "ladle".

The floral cup is covered with soft hairs and about long, tapering to a very short pedicel. The sepals are egg-shaped to triangular, about long, the petals long and the stamens about long. Flowering mainly occurs from August to September and the fruit is a woody capsule about in diameter with the remains of the sepals attached, but that falls off when mature.

The floral cup is top-shaped, long, glabrous with two green appendages, long. The sepals are pale pink to mauve, spreading, long, with 6 or 7 feathery lobes and two ear-like appendages on the sides. The petals are similar in colour to the sepals, long and erect with long filaments on their ends. The style is long, curved and hairy near the tip.

The sepals are feathery, spreading, long, lemon-yellow at first but later turn reddish. The petals are about the same colour and length as the sepals but erect and divided into feathery, finger-like lobes. The stamens and staminodes are joined to form a tube at their lower end and the stamens are long alternating with much shorter staminodes. The style is long, straight and glabrous.

Caladenia lorea is a terrestrial, perennial, deciduous, herb with an underground tuber and a single erect, hairy leaf, long and wide. Up to three cream, pink and red flowers, long and wide are borne on a stalk tall. The sepals and petals have thin, light brown, club-like glandular tips, long. The dorsal sepal is erect, long and wide and the lateral sepals are long and wide.

The dorsal sepal is erect, long and about wide. The lateral sepals are long and wide and the petals are long and about wide. The lateral sepals and petals are linear to lance-shaped in the lower half of their length, then suddenly taper to thin, drooping ends. The labellum is white, long and wide with narrow teeth up to long on the sides.

The flowers are cream-coloured to pale yellow with dark red lines and blotches. The dorsal sepal is erect, long, wide and curves slightly forwards. The sepals and petals are linear to lance-shaped near their base, then suddenly narrow to a dark brown, thread-like tip covered with glandular hairs. The lateral sepals are long, wide and spread widely but with drooping tips.

The flowers are dull creamy-white to pale yellow with dark red lines and blotches. The dorsal sepal is erect, long, wide and curves slightly forwards. The sepals and petals are linear to lance-shaped near their base, then suddenly narrow to a purplish-black, thread-like tip covered with glandular hairs. The lateral sepals are long, wide and spread widely but curving downwards.

The plant bears bell-shaped, solitary flowers usually with white and pink lobes and pink anthers. The flower stalks and sepals are red, but the petals may also be yellowish-white. The anthers can also be brownish-yellow and flower stalks and sepals yellowish-green. Arctic bell-heather It grows on ridges and heaths, often in abundance and forming a distinctive and attractive plant community.

The branched inflorescence grows beneath the leaf crown, circling the trunk, producing tiny branches of male and female flowers. The male flowers have three sepals, three petals and six stamens, with three petals, three sepals, and three staminodes in the females. The ovoid fruit ripen to a bright red color, containing one ellipsoidal seed.Riffle, Robert L. and Craft, Paul (2003) An Encyclopedia of Cultivated Palms.

Caladenia clavescens is a terrestrial, perennial, deciduous, herb with an underground tuber and a single leaf, long and wide. One, rarely two flowers are borne on a spike high. The flowers are dark red to maroon, sometimes cream-coloured or pinkish with petals and sepals long. The sepals are wide, flattened near their bases but taper to a thread-like tip which is densely covered with glands.

The sepals are long, wide and the petals are long, wide. The sepals are egg-shaped with the narrower end towards the base, the petals are broadly egg-shaped and all five make a star-like shape. The labellum projects forward, long, wide and has three lobes. The middle lobe is spatula-shaped with two yellow calli and the side lobes are narrow and curve upwards.

The flowers are surrounded by hairy bracts long and wide and shorter pairs of bracteoles. The floral cup is long and the five sepals are lance- shaped, hairy and about long. The five petals are long and pink and there eleven to fifteen stamens. Flowering occurs between August and October and is followed by fruit which are urn-shaped capsules with the sepals attached.

There are many reddish brown bracts around the flower buds but most fall off as the flower opens. The floral cup is mostly glabrous, long with the upper part expanded. The sepals are triangular, about long, the petals white, long and the stamens long. Flowering mainly occurs from August to October and the fruit is a capsule wide with the remains of the sepals initially attached.

The floral cup is top-shaped, about long, with 5 ribs and glabrous. The sepals are deep yellow or cream, long, with 7 to 12 densely feathery lobes. The petals are a similar colour to the sepals but often also with red spots, egg-shaped, long with a fringe and ear-like appendages. The style is long, bent, with hairs mostly on one side.

The dorsal sepal is erect and curves forward, linear to lance-shaped, long, about wide and narrows to a glandular region long. The lateral sepals are oblong to lance- shaped, curved like a sickle, long, wide and have a glandular tip like that on the dorsal sepal. The petals are linear to lance-shaped, long, about wide. The lateral sepals and the petals spread widely.

The floral cup is shaped like half a sphere, about long, smooth but hairy near its base. The sepals are pale pink, to very dark purplish pink and fade with age, or sometimes white. They are long, with 3 lobes which have a fringe of coarse hairs. The petals are a similar colour to the sepals, long, egg-shaped with many filaments on their ends.

The floral cup is broad, top-shaped, long, ribbed and glabrous. The sepals are golden- yellow, but age to orange, then red to brown and almost black and are long, with 6 to 8 hairy lobes. The petals are a similar colour to the sepals and their main body is wide and they have long, pointed, finger-like appendages. The style is long, straight and glabrous.

The floral cup is broad top-shaped, long, ribbed and glabrous. The sepals are lemon- yellow, long, with 6 to 8 hairy lobes and change colour through red, to brown and almost black as they age. The petals are a similar colour to the sepals, , their main body is wide and they have long, pointed, finger-like appendages. The style is long, straight and glabrous.

The flowers are pale to bright mauve-pink and fade to white as they age. The floral cup is shaped like half a sphere, about long, smooth but hairy near its base. The sepals are long, with 2 to 4 lobes which have a fringe of coarse hairs. The petals are a similar colour to the sepals, long, egg-shaped with many filaments on their ends.

The flowers are white to cream and lemon- coloured, or bright yellow, or pink and cream-coloured. The floral cup is shaped like half a sphere, about long, smooth but hairy near its base. The sepals are long, with 3 lobes which have a fringe of coarse hairs. The petals are a similar colour to the sepals, long, egg-shaped with many filaments on their ends.

Caladenia congesta is a terrestrial, perennial, deciduous, herb with an underground tuber and a single, sparsely hairy, linear leaf, long and wide. Up to three bright pink flowers are borne on a spike high. The sepals and petals are lance-shaped, spreading, with dark red glandular hairs on their backs, the petals narrower than the sepals. The dorsal sepal curves and forms a hood over the column.

The inflorescence is a solitary, showy flower with indistinguishable petals and sepals. Sepals range from six to many; stamens are numerous and feature short filaments which are poorly differentiated from the anthers. Carpels are usually numerous, distinct, and on an elongated receptacle or torus. The fruit is an etaerio of follicles which usually become closely appressed as they mature and open along the abaxial surface.

The dorsal sepal is narrow egg-shaped with the narrower end towards the base, long and wide. The lateral sepals are similar to the dorsal sepal but narrower and turn downwards and away from each other. The petals are a similar size and shape to the lateral sepals. The labellum is egg-shaped with the narrower end towards its base, long, wide and has three lobes.

In flowering plants, the operculum, also known as a calyptra, is the cap-like covering or "lid" of the flower or fruit that detaches at maturity. The operculum is formed by the fusion of sepals and/or petals and is usually shed as a single structure as the flower or fruit matures. In eucalypts, (including Eucalyptus and Corymbia but not Angophora) there may be two opercula - an outer operculum formed by the fusion of the united sepals and an inner operculum formed by the fusion of the sepals. In that case, the outer operculum is shed early in the development of the bud leaving a scar around the bud.

The outer sepals are long, concave particularly near the tip, that appears pointed because the margins are foulded against each other. The inner sepals are almost flat and have a stump tip. The four petals, which fall earlier than the sepals, are approximately long, and consist of a linear, up-curved claw of long, that gradually passes into a wider, creamy, yellowish or dirty pink colored, oblanceolate long blade. The base of the (four or) five stamens and the pistol have merged into a horizontally oriented 4–5 mm long androgynophore, with the free upper parts of the filaments long and carrying 3½ mm (0.14 in) long, very quickly falling anthers.

They are sometimes hairy. Light purple flowers grow in the leaf axils. They have hairy bracts and sepals. The back sepal tapers into a long spur.

White or cream colored. Almond scented. Sepals are marked by dark red-brownish dots. Stamens fused into five bundles, usually two or three stamens per bundle.

The flowers are solitary or in clusters of 2-5 and have triangular sepals. The fruit is globose (diameter 13-20 mm) and a glossy black.

The inflorescence is a loose umbel of tiny flowers each made up of whitish, petal-like sepals less than 2 millimeters long, and no true petals.

The sepals are long, forming a tube about long with two lobes, the upper lobe about long. The petals are pale mauve to mauve and long.

Flowers of A. ponderosa are polygamous and form cymes at the bases of leaves. They are in diameter; the five sepals are and cover five petals.

The plant has linear and very hispid bracts, the sepals are long harboring pink-red corollas. The fruit is a very hirsute pod with yellowish hairs.

Sepals are long with 5–7 veins and are ovate-lanceolate; petals are long and ovate. The fruit is an ovoid capsule up to in length.

It is surrounded by a calyx of densely hairy sepals which are unequal in size and shape, 2 being longer and wider than the other 3.

Each flower has a tubular calyx of densely hairy sepals and a five-lobed corolla in shades of pale blue with a whitish or yellowish throat.

The solitary flowers have three minutely hairy, long and narrow petals, maroon in color, with small, rusty, hairy sepals, and stamen-like, pollen-bearing inner petals.

The flower has no petals and is composed of a calyx of fleshy, rounded, hairy sepals. The fruit is an utricle that grows within the calyx.

The sepals and petals curve downwards. The labellum is long and wide with a channelled base and two orange bands. Flowering occurs between September and January.

Flowering occurs from July to December and is followed by an egg-shaped fruit with two humps on the end and the sepals attached to it.

The leaves are very like those of Harpullia pendula, but in H. leichhardtii the sepals persist in the fruit and the seeds have well developed arils.

Individual flowers are large with five sepals and five purple-pink petals, measuring up to long. The fruits are large and woody, with a fleshy involucre.

Flowering occurs in September, October or November and is followed by fruit which is almost spherical, in diameter and densely hairy with the sepals remaining attached.

Each flower is roughly a centimeter long and white to light blue in color. It has a calyx of linear sepals and five long, protruding stamens.

Inflorescence in racemes smaller than leaves. Perianth made of 6 petal-like yellow sepals, in diameter. Stamens ; anthers oval. Ovary topped by a thick sessile stigma.

Perfect flower with 5 white tiny petals and 5 green sepals slightly offset from petals. There are also 10 yellow stamens about 1 cm in diameter.

Each flower has a calyx of dark purple or black sepals that contrasts with the pale pinkish corolla. The tubular corolla measures just over a centimeter long.

Lateral sepals bent downward and outward more than 90 degrees. Petals are near entire fringed and the shape is linear and narrows toward the point of attachment.

The lateral sepals turn downward with short tips curving forwards. The labellum is small, almost glabrous, dark brown and insect-like. Flowering occurs from September to November.

The petals are free from each other and usually smaller than the sepals. The labellum often has three lobes, in which case the side lobes are erect.

It has small succulent leaves each a few millimeters long. The flowers atop the threadlike stems have fleshy sepals and yellowish petals a few millimeters in length.

Behind the flowers are four smaller sepals, which are greenish and reflexed back against the pedicel. The fruit is a cylindrical capsule 4 to 10 centimeters long.

The sepals persist as a black, five-pointed star on the ripe fruit.Erlbeck, Haseder, Stinglwagner 1998, p. 167 A corymb carries 80 to 100 pomes.Garcke 1972, p.

Flowers occur in the leaf axils and are solitary or arranged in small clusters. The flowers have no petals but thin white sepals with thin membranous edges.

The four sepals are egg-shaped and the four petals are pink to pale red. The eight stamens are hairy. Flowering mainly occurs from July to December.

Its members superficially resembles species of the genus Myosotis (Forget-me-nots), but are distinguished from the latter by having only 4 sepals (petals) instead of 5.

The flower has pointed sepals beneath rounded lavender to purple petals. The fruit has a small body with a pointed style column up to five centimeters long.

The sepals and bracteoles are fuzzy-haired. Flowering occurs in June through August, or into October when enough moisture is available. The seeds float on water.Hibiscus dasycalyx.

'exserted labellum'. The specific epithet (exserta) is a Latin word meaning "projecting" or "thrust forth", referring to the way the labellum is raised above the lateral sepals.

Schizolaena exinvolucrata grows as a tree up to tall. Its leaves measure up to long. The peduncle and sepals are glabrous. It has a fleshy, glabrous involucre.

The flowers have tepals, as it is difficult to differentiate between the petals and sepals. Flowers are in the deltoid shape. Its fruits are brown and achenes.

The sepals and petals are generally reflexed back toward the stem and the five pistils and many thin stamens extend forward from the center of the flower.

Melaleuca calycina was first formally described in 1812 by Robert Brown in Hortus Kewensis. The specific epithet (calycina) is from the Greek kalyx, calyx, (collectively the sepals).

Sepals narrowly elliptic; petals ovate, elliptic or rhomboid; lip folded to form a tube, with very wavy front margin. Pollinia 4, with curved appendages. Cattleya rex. Habit.

The inflorescence bears small flowers with five pointed sepals and five oval white or pink petals. The fruit is a capsule containing shiny, sometimes iridescent, black seeds.

The four sepals are triangular, about long and wide. The four petals are long with hairs along their edges. The fruit is a capsule long and wide.

The sepals and petals yellow, cream-coloured or greenish and have reddish streaks on the backs and on their bases at the front. The sepals are long and wide and the petals are a similar length but only about wide. The labellum is long, wide and is strongly curved. The side lobes are short and blunt and the middle lobe has crinkled edges and three wavy ridges along its midline.

The sepals are deep yellow or cream-coloured, long, with 6 to 10 feathery lobes and ear-shaped appendages. The petals are a similar colour to the sepals, sometimes with red spots, egg-shaped to almost round, long and have long, pointed, finger-like appendages. The style is long, bent and hairy, mostly on one side. Flowering time is from September or November to January, depending on variety.

Stipules are linear, measured approximately 1.5 cm in length. Both stems and petioles (3–11 cm in length) are smooth or generally free from hair. Acetosella is further divided into a section called Furcaria, which is a group of approximately 100 species that have non-fleshy calyx or sepals. The sepals contain 10 veins, 5 of which run to the apices of the segments; the other 5 run to the sinuses.

The dorsal sepal and petals are fused to form a hood or "galea" over the column. The dorsal sepal and petals are a similar length and end in a blunt tip. There is a wide gap at each side of the flower between the petals and lateral sepals. The lateral sepals are erect, about the same length as the galea, long and there is a broad V-shaped sinus between them.

Caladenia orientalis is a terrestrial, perennial, deciduous, herb with a small, spherical, underground tuber and a single leaf, long and wide. One or two creamy-white to yellowish-green flowers are borne on a stalk tall. The sepals and petals taper to thin brown to black tips. The dorsal sepal is erect, long, about wide and the lateral sepals are long, wide and spread away from each other.

The ABC model of flower development. Class A genes affect sepals and petals, class B genes affect petals and stamens, class C genes affect stamens and carpels. In two specific whorls of the floral meristem, each class of organ identity genes is switched on. The four types of flower parts, namely carpels, stamens, petals, and sepals, are homologous with and derived from leaves, as Goethe correctly noted in 1790.

The flowers are borne singly in leaf axils on an S-shaped, sticky stalk, mostly long. There are 5 overlapping, egg-shaped sepals which are mostly long, glabrous on the outer surface and hairy along the edges and on the inner surface. The sepals are coloured orange to purplish-red, or yellow with a pinkish tinge. The petals are long and joined at their lower end to form a tube.

The dorsal sepal is narrow oblong, about long, wide and turns downwards. The lateral sepals are egg-shaped, about long and wide and curve around the labellum. The petals are a linear in shape and similar in size to the sepals. The labellum is broadly egg-shaped, about long and wide with three blunt teeth on the end, the middle one longest and with a deeply pouched base.

The lateral sepals are long, wide and spread widely but with the tips turned downwards. The petals are long and wide and arranged like the lateral sepals. The labellum is long and wide, white near the base then bright red with the tip curled under. The sides of the labellum have teeth up to long and there four or more rows of red calli up to long along the centre.

Despite its Pernetiana ancestry it has dark green laurel-like leaves, forming an elegant shrub entirely lacking in hardness or angularity. The buds are long and pointed, with sepals extending beyond the bud. As the sepals separate, the buds show maroon, mahogany and burnt orange colour. The four-inch blooms – sometimes in clusters – have broad, veined, reflexed petals and yellow centres; they tend to look out rather than up.

The leaf may be medium-sized to large, fleshy or leathery, lance-shaped to oblong, but is always simple, lacking lobes and serrations. The inflorescence is a raceme with from one to eight resupinate flowers. The three sepals and two petals are free and similar in size and shape to each other. In some species, the sepals or petals or both have narrow tips with club-like ends.

The dorsal sepal and petals are fused, forming a hood or "galea" over the column. The dorsal sepal curves forward with a sharp tip and is the same length as the petals. There is a wide gap between the petals and the lateral sepals which have swept-back, thread-like tips 25–35 mm long. The sinus between the lateral sepals is almost flat with a central notch and bulges forward.

The dorsal sepal is erect, long and wide and the lateral sepals are long, wide and spread stiffly. The petals are long and wide, and spread like the lateral sepals. The labellum is long and wide and has a few short teeth on its sides and there are two rows of yellowish calli in its centre. Flowering occurs from late September to November, most prolifically after fire the previous summer.

The flowers are usually borne singly, on a pedicel long. The sepals are longer and wider than the petals, egg-shaped to triangular, long, wide and densely hairy on their backs. The petals are white to pink or burgundy-coloured, long and both the sepals and petals enlarge as the fruit develops. Flowering occurs between January and September and the fruit is a hairy capsule long and wide.

The lateral sepals and petals have about the same dimensions as the dorsal sepal although the lateral sepals are slightly wider. The labellum is long and wide and reddish- mauve with darker bars. The sides of the labellum curve upwards but without surrounding the column. The labellum has a white and yellow down-curved tip and there are two rows of stalked yellow calli along the mid-line of the labellum.

The lateral sepals are long, about wide and spread apart from each other, curving downwards. The petals are long, about wide and arranged like the lateral sepals. The labellum is long, wide and whitish with a dark red, downcurved tip. The sides of the labellum have red teeth and there are four or six rows of dark red calli up to long, along the mid-line of the labellum.

The dorsal sepal and petals are fused, forming a hood or "galea" over the column. The dorsal sepal curves forward and has a short point. The lateral sepals are erect, held closely against the galea with thread-like tips about 3mm long which barely project above the galea. The sinus between the bases of the lateral sepals is flat and the opening in front of the flower is only about wide.

The five petals are white and at long are only slightly longer than the sepals. The petals form a bell-shaped tube with three lobes slightly larger than the other two. There are four stamens, with two slightly longer than the other pair, the longer pair about the same length or slightly shorter than the petal tube. The fruit is a hairy, oval-shaped capsule with the sepals attached.

Orchids in the genus Gastrodia are leafless, terrestrial, mycotrophic herbs with a fleshy, underground rhizome and an upright flowering stem with a few to many brownish, resupinate flowers. The sepals and petals are fused to form a bell- shaped or irregular tube with the tips free. The petals are usually much smaller than the sepals and the labellum has three lobes and is fully enclosed in the tube.

The flowers are white to pink and are egg-shaped to triangular, usually arranged singly, sometimes in groups of up to three, in leaf axils on a pedicel long. The four sepals are egg-shaped to triangular, long and wide but almost double in size as the fruit develops. The petals are a similar size to the sepals and scarcely enlarge as the fruit develops. Flowering occurs from May to July.

Each flower grows up to in diameter with 5 persistent sepals, 5 bright yellow petals, and around 200 stamens. It flowers in the late spring to summer (May–July). The ovary is three- or four- parted, separating at the top as it ripens, producing blackish-brown seeds. Hypericum myrtifolium is distinguished from the similar H. frondosum by its shorter, usually clasping leaves, its broadly branching dichasial flowerheads, and its persistent sepals.

The lateral sepals are long, wide, turn downwards and joined for about half their length. The lateral sepals are dished and suddenly narrow to thread-like tips long which curve forwards with hooked ends. The labellum is brown, fleshy, insect-like, about long, wide and egg-shaped with short bristles on the "head" end and eight to ten pairs of longer bristles on the "body". Flowering occurs from October to November.

Bulbophyllum lageniforme is an epiphytic or lithophytic herb with clump-forming, flattened, pale green, grooved pseudobulbs long and wide. The leaves are narrow oblong, thin but stiff, long and wide. Up to four bell-shaped, cream-coloured or pale green, rarely pink flowers long and wide are arranged a thread-like flowering stem long. The dorsal sepals is egg-shaped, long and wide, the lateral sepals long and wide.

Individual flowers completely lack petals and are formed by four (rarely five) petaloid sepals, tubular at the base with free lobes at the apex. They range in colour from white, greenish yellow or yellow to bright pink and purple. Most of the evergreen species have greenish flowers, while the deciduous species tend to have pink flowers. There are twice the number of stamens as sepals, usually eight, arranged in two series.

The flower head is surrounded by bracts (sometimes mistakenly called sepals) in two series. The inner bracts are erect until the seeds mature, then flex downward to allow the seeds to disperse. The outer bracts are often reflexed downward, but remain appressed in plants of the sections Palustria and Spectabilia. Some species drop the "parachute" from the achenes; the hair-like parachutes are called pappus, and they are modified sepals.

Boronia fastigiata is an erect shrub that grows to a height of with leaves that are broadly elliptic or egg-shaped, long and sometimes have serrated edges. The flowers are red, pink or purple and are arranged singly or in small groups in upper leaf axils. The four sepals are egg-shaped and the four petals are about long and twice as long as the sepals. The eight stamens are hairy.

The top two bracts are fused at their base to form a tube that is 4 millimeters long. The peduncle and pedicles are covered in dense golden to rusty hairs. Its 3 sepals are 12-21 by 5.5-16 millimeters and bent backwards at maturity. The outer surfaces of sepals are densely covered in 0.1-millimeter-long rust-colored hairs interspersed with longer hairs up to 2 millimeters.

The ratio of oleic to linoleic acids are inverted between wind- and animal-dispersed seeds. Further differentiation from other species of Juglandaceae occurred about 44 million years ago during the Eocene. The fruits of the pecan genus Carya differ from those of the walnut genus Juglans only in the formation of the husk of the fruit. The husks of walnuts develop from the bracts, bracteoles, and sepals, or sepals only.

Corybas cryptanthus is a terrestrial, perennial, saprophytic, herb with its leaves reduced to tiny triangular scales on horizontal rhizoids buried in leaf litter. There is a single more or transparent whitish to pinkish flower with red or purple streaks. Its dorsal sepal is long and lance-shaped. The lateral sepals and petals are thread-like, the lateral sepals longer than the petals and often appear above the leaf litter.

The floral cup is about long, glabrous and slightly warty in the lower half. The sepals are lemon-yellow, bright yellow or golden-yellow but quickly age to pinkish-red, reddish-brown or reddish-grey, spreading, long, with 10 to 13 densely hairy lobes. The petals are the same colour as the sepals, spreading , with long, pointed finger-like projections. The tips of the stamens have two horn-like appendages.

The floral cup is top-shaped, about long, smooth and partly hairy. The sepals are a bright citrus-yellow when they open, ageing to red and finally brown. They are long and lack lobes but are deeply divided with spreading hairs. The petals are a similar colour to the sepals, more or less round and spreading, about long and wide with a fringe of hairs around their edge.

The flowers are arranged in open groups on stalks long near the ends of the branches. The floral cup is broadly top-shaped, about long, glabrous but slightly rough. The sepals are bright mauve-pink long, with 5 to 7 hairy lobes. The petals are the same colour as the sepals, sometimes with a white base and are about long, or less wide, egg-shaped with long, coarse hairs.

The flowers are surrounded by leaf-like prophylls long and wide and the sepals are egg-shaped to triangular, long, wide and hairy on the outer surface. The petals are yellowish green, long and wide and hairy on the upper surface. The sepals, but not the petals enlarge as the fruit develops. Flowering occurs between January and June and the fruit is a glabrous capsule long and about wide.

In general the hairy stem reaches up to about half a meter tall and has many hairy leaves divided into lance- shaped lobes. The inflorescence appears at the tip of the stem and bears a solitary flower. The flower is made up of an urn-shaped cup of deep purple- blue petallike sepals, which are fuzzy and have pointed or rounded tips. Rare individuals have white or pinkish sepals.

The dorsal sepal is lance-shaped to egg-shaped, long and about wide. The lateral sepals are linear to lance-shaped, long, wide and mostly free from each other. The petals are greenish-brown with whitish edges, linear to oblong, long and about wide. The labellum is whitish, oblong to egg- shaped, long, wide and curves upward about half-way along with the tip just reaching between the lateral sepals.

In polygamous species, flowers have been assessed as bisexual on the basis of morphology only. Pollen produced by apparently hermaphroditic flowers has, in a few cases, been found to be inaperturate, rendering the flower functionally female. Sepals 3 to 5, often unequal, sometimes accrescent. Petals 4 or 5, or rarely 3, 6, 7, or 8, often contort, free or fuzed at base only, sometimes reflexed over the sepals.

Petals are usually accompanied by another set of special leaves like structures called sepals, that collectively form the calyx and lie just beneath the corolla. The calyx and the corolla together make up the perianth. When the petals and sepals of a flower are difficult to distinguish, they are collectively called tepals. Examples of plants in which the term tepal is appropriate include genera such as Aloe and Tulipa.

The dorsal sepal is lance-shaped to egg-shaped, long and about wide. The lateral sepals are egg-shaped to lance-shaped, long, wide and free from each other. The petals are brownish-green with whitish edges, linear to oblong, long and wide. The labellum is white, lance-shaped to egg-shaped, long, wide and turns sharply upward at 90° about half-way along, reaching the lateral sepals.

The sepals are pale to bright pink or dark reddish-pink, fading to white, or sometimes white, long, with 9 to 13 feathery lobes and two small, hairy, ear-like appendages. The petals are erect and a similar colour to the sepals, long, with a hairy fringe. The style is long, bent at first but gradually straightening and has hairs mainly on one side. Flowering time is from July to November.

Caladenia brevisura is a terrestrial, perennial, deciduous, herb with an underground tuber and a single erect, hairy leaf long and about wide. The single flower (or rarely two flowers) is borne on a stem high and is long and wide. The dorsal sepal is pointed and the lateral sepals and petals are short and down-swept. The lateral sepals have narrow, red, scent-producing glands on their ends.

Sarcochilus dilatatus is a small epiphytic herb with a stem long with between four and twelve thin, leathery, dark green leaves long and about wide. Between two and twelve brown or dark reddish brown flowers long and wide are arranged on a flowering stem long. The tips of the sepals and petals are often dilated. The dorsal sepal is long and wide whilst the lateral sepals are slightly longer.

Schoenorchis sarcophylla is a small epiphytic herb with many thin roots, stems long and between three and seven crowded, fleshy, channelled dark green, linear to narrow elliptic leaves long and wide. Between five and thirty crowded, tube- shaped white flowers, about long and wide are crowded on a stiff flowering stem long. The sepals are long and wide. The petals are smaller than, and hidden by the sepals.

Caladenia lindleyana is a terrestrial, perennial, deciduous, herb with an underground tuber and a single narrow, densely hairy leaf, long and wide. One or two flowers wide are borne on a stalk tall. The flowers are greenish-yellow with red markings and the sepals taper to thin, dark, glandular tips. The dorsal sepal is erect, long and about wide, and the lateral sepals are long and about wide and spread widely.

The dorsal sepal is erect, long and wide. The lateral sepals and petals are long and wide with the petals slightly narrower than the lateral sepals. The labellum is long and wide and white, with radiating red lines, spots and blotches. The sides of the labellum have short, curved teeth, the tip is turned downwards and there are two rows of broad, anvil-shaped, white calli along its centre.

The flowers are bisexual, radially or occasionally bilaterally symmetric, with a well-developed hypanthium. The flowers are most commonly four-merous but can be six-merous, with four to eight sepals and petals. The sepals may be distinct, partially fused to form a tube, or touching without overlapping. The petals are crumpled in the bud and wrinkled at maturity, and are typically distinct and overlapping; they are occasionally absent.

Caladenia luteola is a terrestrial, perennial, deciduous, herb with an underground tuber and a single erect, hairy leaf, long and wide. Up to three lemon yellow flowers, long and wide are borne on a stalk tall. The sepals and petals have long, brown, thread-like tips. The dorsal sepal is erect, long and wide and the lateral sepals are long, wide, spreading stiffly near their base but then drooping.

The flower has four or five small sepals, reduced to small projections on the rim of the floral cup. There are four or five more or less round, keeled, overlapping petals and whorls of many creamy white stamens. Unlike in Eucalyptus and Corymbia, the petals and sepals are not fused to form a cap- like operculum. The fruit is a papery or thin, slightly woody, hairy capsule with longitudinal ribs.

Caladenia meridionalis is a terrestrial, perennial, deciduous, herb with an underground tuber and a single erect, hairy leaf, long and wide. One or two white to cream-coloured flowers long and wide are borne on a stalk tall. The sepals and petals have dark reddish-brown, drooping, thread-like tips. The dorsal sepal is erect, long, wide and the lateral sepals are a similar length but slightly wider.

The lateral sepals spread widely near their bases then hang. The petals are long and wide and arranged like the lateral sepals. The labellum is long and wide, white with red stripes, spots and blotches and the tip is curled under. The sides of the labellum have short, irregular serrations and there are six to twelve creamy-yellow, anvil-shaped calli with pink markings, in two rows along the centre.

Kadsura longipedunculata can grown between 2.5 meter and 3.5 meters in height, prefers to grow in semi shaded areas and requires water often. The male flowers can be either red or cream while the female flowers tend to be only cream colored. The sepals of the female flowers turn inwards created a dome-shape while the sepals of the male flowers are slightly curved upwards but do not close.

The lateral sepals are long, about wide, linear to lance-shaped for about half their length, curved like a sickle then narrowed to a thread-like tail. The dorsal and lateral sepals have a yellowish glandular tip. The petals are long, about wide, linear to lance-shaped and slightly curved. The labellum is broadly heart-shaped when flattened, long and wide, greenish to greenish-brown and has three sections.

The dorsal sepal is erect, long, wide, linear to lance- shaped or egg-shaped and curves forward. The lateral sepals and petals are long, wide, lance-shaped, slightly curved, held horizontally and spread widely. The sepals and petals are glabrous on the inside and densely covered with brownish glands on their backs. The labellum is broadly egg-shaped when flattened and bright pink with many narrow, dark red lines.

The dorsal sepal is broadly egg-shaped, green and long and the lateral sepals are a similar length but narrower and are free from each other. The petals are similar in size to the lateral sepals and curve forwards. The labellum is heart-shaped, purplish or pink, up to long and turns upwards. There is a deep purplish, triangular callus with a V-shaped ridge along the centre of the labellum.

Plants in the genus Zieria are shrubs or small trees. The leaves are arranged in opposite pairs and are usually compound with three leaflets similar in shape but the middle leaflet slightly larger. The flowers are arranged in groups in the leaf axils and have four fused sepals and four petals alternating with the sepals. There are four stamens (eight in Boronia) and four carpels with their styles fused.

The floral cup is long and glabrous and the sepals are triangular and about long. The petals are broadly egg-shaped to almost round, about long and there are 43 to 48 stamens in several rows, each stamen long. Flowering occurs in October and November but sometimes in other months when conditions are favourable. The fruit that follows flowering is an urn-shaped capsule with the remains of the sepals attached.

There are 5 yellow-green or brownish, overlapping, elliptic to lance-shaped sepals which are mostly long. The sepals are often densely covered with glandular hairs otherwise almost glabrous but with spots of brown resin. The petals are long and are joined at their lower end to form a tube. The petal tube is white to lilac-coloured, blue or purple, with lines of yellow-brown spots inside the tube.

The petals usually spread widely while the sepals hang downwards. As is usual in orchids, one petal is highly modified as the central labellum. The labellum is separated from the sepals and other petals, its base attached to the base of the column. It is long, gently curved in a semi-circle, with three lobes, the central one egg-shaped to oval with its base surrounding the column.

The four sepals are narrow egg-shaped to narrow triangular, long, wide and hairy on their lower surface. The four petals are long, wide and enlarge slightly as the fruit develops. The eight stamens alternate in length with those near the sepals longer than those near the petals. Flowering occurs from July to November and the fruit are about long and wide with the remnants of the petals attached.

Mitrephora are a genus of trees that are often tall. They have leathery leaves. They have 3 rounded sepals. Their flowers have 6 petals arranged in two whorls.

The five-lobed calyx of sepals at the base of the flower enlarges as the fruit develops, becoming an inflated, ribbed, lanternlike structure long which contains the berry.

Sepals with smooth ribs quite unlike the muricate (warty) ribs of the similar E. cordifolius. Achenes probably with 3 facial glands. Most specimens seem to have few flowers.

The inflorescence is a cyme of 2 to 5 flowers, each with 5 pointed green sepals and 5 rounded white petals. The fruit is a toothed black capsule.

The flowers have thick pinkish-purple sepals and spoon- shaped pink to purple petals. The fruit is a long, narrow, purple silique which may be many centimeters long.

The lateral sepals form a small ledge or "mentum" with the base of the column. There is sometimes a sac-like structure at the base of the labellum.

The showy flowers are made up of five bright orange sepals and have no true petals. Hybrid Fremontodendron 'Ken Taylor' (F.mexicanum × F. californicum). Hybrid Fremontodendron 'California Glory' (F.

Each flower is about half a centimeter wide and has hairy pink-edged greenish sepals and tiny pale yellow petals. There are five stamens and a few pistils.

Flowers occur at intervals along the stem. Each has a greenish base of blunt sepals. The corolla is oval with rounded ends. The petals royal purple in color.

The plant blooms in summer with tiny flowers made up of pointed sepals under 4 millimeters long and five white petals roughly the same length or slightly smaller.

The calyx is an elongated pocket of fused sepals with lobes separating at the top. The fuzzy, glandular corolla is white to light blue with a yellowish throat.

There are three to five flowers per cluster, each with a calyx of horned sepals and no petals. The fruit is an utricle that grows within the calyx.

The inflorescence is a raceme of flowers with yellow-green sepals and no petals. It is the only Heuchera with six-parted flowers.Heuchera eastwoodiae. Flora of North America.

Flowering occurs from August to November or December and is followed by the fruit which is oval-shaped to almost spherical, in diameter with the sepals remaining attached.

The petals are also free from each other and smaller than the lateral sepals. The labellum is often fleshy, curved and hinged to the base of the column.

Flowering occurs mainly from July to December and is followed by fruit which is a curved oval shape, long, covered with soft hairs and has the sepals attached.

Flowering occurs from August to late September. The dull red or pinkish red colour of the petals and sepals distinguish this from the other subspecies of Caladenia denticulata.

The sepals are long and the petals are yellow, elliptical, long, covered with rust-coloured, star-shaped hairs on the back. There are ten stamens. Flowering occurs in spring.

Flowers sessile or subsessile on pedicels 2 – 4 mm long. Sepals about 5 mm long, with usually 18 ribs, corolla white. Aggregate fruit globular, 5 – 7 mm in diameter.

The sepals and petals are narrow and similar in size and shape to each other. The labellum is relatively broad and dished with a prominent spur at its base.

Each flower has five hairy, pointed sepals and five rounded to oval white petals. The center of the flower contains twenty stamens with disc-shaped anthers and several pistils.

The inflorescence is a solitary flower with five sepals and five small white petals. There are two subspecies which differ mainly in the arrangement of hairs on the stem.

The inflorescence contains many leaves and a few flowers. The flowers have bell-shaped calyces of green sepals and lobed petals which may be dark red, white or purplish.

V. miniatum's flowers are slightly transparent, reddish, and noticeably veined, its petals and sepals are narrower, and its lip is recurved. V. garayi's leaves are usually shorter and thicker.

Each flower is on a pedicel 2.4 centimeters long. Its 3 sepals are 4-6 by 4-7 millimeters. Its 6 petals are arranged in two rows of 3.

The eight stamens are all fertile and alternate in length with those adjacent to the petals shorter than those adjacent to the sepals. Flowering occurs from June to October.

The partial peduncles, sepals, and staminal column bear short, crisp hairs. Danser describes the colour of herbarium specimens as "fallow-dun to ochraceous-brown, the indumentum dark-red-brown".

The sepals are long and form a tube long with two lobes, the upper long. The petals are lilac to mauve and long. Flowering occurs from September to April.

The flowers are red to yellow, lack spots and are arranged singly in the leaf axils on a stalk which is long. There are 5 sepals which are narrow egg-shaped to triangular and of approximately equal lengths. The petals, which give the flowers their colour are long and joined in a tube with 5 lobes at the end. As with the leaves, the sepals and petals have a dusty covering of short, fine hairs.

Prostanthera serpyllifolia is a prostrate to erect shrub that typically grows to a height of less than with hairy white branches. The leaves are egg-shaped to broadly elliptic, long and wide and sessile or on a petiole up to long. The flowers are borne in leaf axils on a pedicel long with bracteoles usually long at the base of the sepals. The sepals are long and form a tube long with lobes long.

The flowers are red to pinkish, sometimes with yellowish green but always have dark red to almost black glandular tips on the sepals and petals. The dorsal sepal is long, about wide and erect near the base but then curves forward. The lateral sepals are long, about wide, egg-shaped to lance-shaped near their base but then tapering, and spread widely with their tips drooping slightly. The petals are slightly shorter and narrower.

The dorsal sepal is tall and curves forward then strongly downward with a long, tapering tip which is much longer than the petals. There is a gap between the galea and the lateral sepals which have long, tapering tips, spread apart from each other and are erect or turned back behind the galea. The labellum is gently curved and protrudes above the sinus between the lateral sepals. Flowering occurs in December and January.

The dorsal sepal is tall and curves forward then downward, tapering to a thin tip long. There is a wide gap between the galea and the lateral sepals which spread apart from each other, with long, thread-like tips up to long which sometimes almost meet behind the ovary. The labellum is flat in cross-section gently curved and protrudes above the sinus between the lateral sepals. Flowering occurs from February to April.

The top of the slender stem is occupied by a cylindrical inflorescence of flowers, each flower two to four centimeters wide with a spur measuring nearly two centimeters in length. The flowers usually have sepals of a brilliant dark blue, with the lower two petals the same color and the upper two petals white. Some individuals have sepals and petals of very light purple or blue to almost white. The anthers are often yellow.

Phebalium tuberculosum is an erect shrub that typically grows to a height of with glandular-warty branchlets, leaves and sepals. The leaves are oblong with the edges rolled under, appearing more or less cylindrical, and are about long and about wide. The flowers are borne in umbels of three or four, each flower on a thick pedicel long covered with rust-coloured scales. The five sepals are long, joined at the base.

From one to a large number of flowers are arranged on an unbranched flowering stem arising from the base of the pseudobulb. The sepals and petals are all free from and similar to each other. The labellum is significantly different from the other petals and the sepals and has three lobes. There are about fifty-five species and sixteen further natural hybrids occurring in the wild from tropical and subtropical Asia to Australia.

There are 5 pale yellowish-green to purplish-brown, linear to lance-shaped sepals which are mostly long but which enlarge after flowering. The sepals are covered with hairs similar to those on the young leaves. The petals are long and are joined at their lower end to form a tube. The petal tube may be white, cream-coloured, violet or purple on the outside and white, sometimes with purple spots inside.

The lateral sepals are similarly arranged but at the front of the flower. The dorsal sepal is long and wide, the lateral sepals are long and wide and the petals are long and about wide. The labellum is long and wide, diamond-shaped and prominently red-striped in the centre of the flower. In the centre of the labellum there is a dense cluster of reddish, club-shaped calli up to long.

Habenaria chlorosepala is a tuberous, perennial herb with two or three bluish-green, erect leaves, long and wide. Between eight and twenty green flowers with a white labellum, long and wide are borne on a flowering stem tall. The dorsal sepal and petals overlap at their bases and form a hood over the column. The sepals and petals are about long and wide, the lateral sepals spread widely apart from each other.

The 1–3 cm long sepals are lanceolate, the dorsal oblong or elliptic, the laterals obliquely ovate, broader than the dorsal, and bearing a toothed keel on the back. The linear petals are slightly shorter than the sepals. The cordate to reniform lip has an elevated callosity down the middle, which extends into a blunt apicule in the retuse end of the lip. Lindley compared E. coriifolium to E. rigidum Jacq (1760) not Lodd.

Caladenia nana subsp. unita is a terrestrial, perennial, deciduous, herb with an underground tuber and a single erect, hairy leaf, long and wide. Up to three (rarely up to five) pale to deep pink, rarely white, flowers long and wide are borne on a spike tall. The dorsal sepal is curved forward over the column and the lateral sepals and petals are short, spreading and fan-like, with the lateral sepals joined at their bases.

Dendrobium discolor is an epiphytic or lithophytic herb with cylindrical green or yellowish pseudobulbs long and wide with between ten and thirty five leathery leaves long and wide. The flowering stem is long and bears between eight and forty light brown, reddish brown, dark brown or yellowish flowers. The flowers are long and wide with wavy and twisted sepals and petals. The sepals are long, and wide and the petals are long and wide.

The flower is bilateral in shape, with two large petal-like sepals on the sides, often called the "wings", and three smaller sepals behind. There are three petals in shades of reddish purple, yellow or white, which are joined at the bases. The lower of the three is the keel petal, which is "boat-shaped, cucullate [hood- like], or helmet-shaped". The keel petal may have a beak or a fringe on the tip.

The head is surrounded by a large number of overlapping bracts and each flower has an erect, elongated bract at its base. The flowers are non-resupinate, arranged in a spiral, inward-facing, dull coloured and lack a stalk. The sepals and petals form a short, curved hood over the labellum and column, open on one side. The lateral sepals are joined to each other and to the dorsal sepal at their bases.

The petals are joined at their bases to the column and are shorter than the sepals. The labellum is different in size, shape and colouration from the other petals and sepals, is thick, fleshy and has no nectar. The column is short with short wings. Flowering time depends on species and is followed by the fruit which is a berry that does not split open (indehiscent) and which contains 50 to 100 seeds.

The dorsal sepal and petals form a hood over the column with the petals flared and the dorsal sepal having a short point. The lateral sepals are erect, fused for most of their length except for their thread-like tips which are long. The lateral sepals are in close contact with the gales and have a bulging sinus between them. The labellum is about long, wide and not visible outside the intact flower.

The sepals are pale yellow, long, covered with short, soft hairs and have 4 or 5 feathery lobes. The petals are the same colour as the sepals, about long, erect and egg- shaped, covered with short, soft hairs on their outer surface and have irregular teeth along their edge. The style is long, curved with a few inconspicuous hairs and extends well beyond the petals. Flowering time is from May to September or October.

Orchids in the genus Pachystoma are deciduous, terrestrial herbs with a branching underground rhizome and one or two linear, papery, pleated or veiny leaves. A thin, wiry flowering stem bears smallish, pink drooping flowers that are hairy on the outside. The sepals and petals are similar in size and shape, the lateral sepals having a hump at their base. The labellum has three lobes, the middle lobe projecting forwards and the side lobes unusually large.

The flowers are only known from the buds of a single collection and the description of them is provisional. The flowers are arranged in rounded groups of five to eight flowers on the ends of the branches and are surrounded by egg-shaped bracts and pairs of bracteoles. The sepals are triangular and about long and the floral cup is longer than the sepals. The petals are more or less round and about long.

Caladenia validinervia, commonly known as the Lake Muir spider orchid, is a species of orchid endemic to the south-west of Western Australia. It has a single erect, hairy leaf and up to three greenish to creamy white flowers with red stripes on the sepals and petals. The flowers have relatively narrow sepals and petals and a relatively small labellum. It is a rare orchid only known from an area between Rocky Gully and Collie.

The lateral sepals are 12–30 mm long, about 1 mm wide and curve downwards. The petals are 20–22 mm long, about 1 mm wide and arranged like the lateral sepals. The labellum is 12–13 mm long, 8–10 mm wide and cream-coloured with wide red lines. The tip of the labellum is red, curls downward and there are two rows of club-shaped calli along the labellum mid-line.

Thalictrum flavum has fibrous roots,Samuel F. Gray and has wedge-shaped, dark green leaves, with a paler green underneath, they are divided into multiple sections. It blooms between June and August. The flowers are composed of short sepals and longer, erect stamens.The Wild Flower Key British Isles - N W Europe, by Francis Rose, 1991, The sepals are actually white, but the multiple erect, yellow stamens, give the flower a yellow appearance.

As usual in peonies, there is a gradation between leaves, bracts and sepals. One to five bracts defined as those immediately below the calyx, have various shapes, ranging from incised and leaf-like to entire and sepal-like. Sepals are rounded or triangular-rounded, mostly green, but sometimes with a pink inside, dark red or purple. They have a much broader base and a smaller, narrower, rounded or suddenly pointed (or mucronate) dark green tip.

The lateral sepals are long and about wide and spread apart from each other, curving downwards. The petals are long and about wide and arranged like the lateral sepals. The labellum is long, about wide and white with dark red markings. The sides of the labellum have short, broad teeth, the tip of the labellum is curled under and there are two rows of red, anvil- shaped calli along the mid-line of the labellum.

The dorsal sepal is the same length as the petals and curves forward with a pointed tip. There is a wide gap between the galea and the lateral sepals. The lateral sepals are erect and have thread-like tips 14–16 mm long and a slightly bulging, V-shaped notch sinus between them. The labellum is 12–15 mm long, about 3 mm wide, brown and curved and protrudes above the sinus.

They have several longitudinal veins and are green with darker green or purplish mottling. The inflorescence is actually an umbel of flowers, but the peduncle is mostly underground with 3 to 12 flower-bearing pedicels rising above the surface, appearing separate. The flower has three flat, spreading, pointed oval or lance-shaped sepals and three narrower, linear or fingerlike petals. The sepals are pale or greenish and striped or streaked with dark purple.

There are 5 overlapping, elliptic to lance- shaped, green or pinkish-purple sepals which are mostly long. Both surfaces of the sepals are hairy, especially around the edges and are usually more hairy on the outer surface. The petals are long and are joined at their lower end to form a tube. The petal tube is pale lilac to pale mauve or pink on the outside and white with purple spots inside the tube.

Eremophila galeata is a shrub growing to between tall with very sticky branches, leaves and sepals due to the presence of large amounts of resin. The leaves are mostly long, wide, lance-shaped to narrow elliptic and have a stalk long. The flowers are borne singly or in pairs in leaf axils on a stalk long. There are 5 sepals which closely surround the petals and which differ greatly in size, enlarging after flowering.

Cymbidium madidum is an epiphytic or lithophytic, clump-forming herb with crowded, oval, slightly flattened, green pseudobulbs and wide. Each pseudobulb has between four and eight thin, strap- like, flexible leaves and wide. Between ten and seventy olive green to brownish green flowers, long and wide are borne on an arching flowering stem long. The sepals and petals curve forward rather than spread widely, the sepals long and wide, the petals long and wide.

Its purple to brown, leathery, oval to triangular sepals are 9-1.35 by 6-9 millimeters, sparsely covered in fine hairs, with bluntly pointed tips. The sepals are fused at their base. Its flowers have 6 petals in two rows of 3. The cream-colored to pale brown, leathery, oblong to oval outer petals are 1.2-5 by 0.9-2 centimeters, have broad thick claws, come to shallow point at their tips.

There are 5 overlapping, egg-shaped to lance- shaped, brownish sepals which are long. The sepals are glabrous except for the long hairs on their edges, are sticky and remain on the plant long after flowering has finished. The petals are long and joined at their lower end to form a tube. They are a shade of violet to lilac-coloured, rarely white on the outside and white with violet spots inside the tube.

Petals narrowly oblong, sub-acute, curved inwards, shorter than the sepals. Lip as long as the sepals, variable in breadth, with large cuneate or rounded, fimbriate or crenate side lobes and a small oblong entire apical lobe. Spur infundibuliform at the base, slender laterally compressed, geniculte, sub-clavate below the knee, longer than the shortly stalked beaked ovary. Stigmas separated by the area in the centre by the orifice of the spur.

The dorsal sepal is erect near its base, then curves forward with a short point. The lateral sepals are erect, held closely against the galea with thread-like tips about long that do not project above the galea. The sinus between the bases of the lateral sepals curves inward and has a small notch in the centre. The labellum is about long, wide, dark brown and not visible outside the intact flower.

The pedicels have an oval, basal bract that is 1 by 1 millimeters, and another bract at their midpoint that is 1-1.5 by 1-2.5 millimeters. Its flowers have 3 triangular to oval sepals that are 1.5-3 by 2-3.5 millimeters. The sepals are covered in dense, brown hairs on their outer surface and sparse hairs on their inner surface. Its 6 petals are arranged in two rows of 3.

The actinomorphic flowers lack true petals and nectaries, but the five to nine (sometimes as little as four or as much as thirteen) sepals are distinctly colored yellow (rarely orange or red) to white (sometimes tinged pink or magenta). The shape of the sepals varies between broadly ovate, obtuse, oblong to lanceolate. The number of stamens range between 6–9 in the smallest species (C. dionaeifolia) and 60-120 in the largest (C.

Cyrtostylis oblonga is a terrestrial, perennial, deciduous, herb with a single heart-shaped to almost round leaf long and wide. Up to four pink or pinkish green flowers long are borne on a thin flowering stem up to high. The dorsal sepal is erect, linear to narrow lance-shaped and the lateral sepals are narrow linear and somewhat smaller than the dorsal sepal. The petals are similar in size and shape to the lateral sepals.

There are 5 lance-shaped, pointed green to purple sepals, long which grow to as the flower matures. The sepals are glabrous on their outer surface but densely hairy with prominent transparent glands on the inner surface. The petals are long and joined at their lower end to form a tube. The petal tube is light to dark lilac-coloured and densely hairy while the inside of the tube is densely woolly.

The flowers are long and wide. The bases of the sepals and petals are linear to lance-shaped and held stiffly for about one-third, then suddenly narrow to a dark brown, densely glandular thread-like section. The dorsal sepal is erect, linear to lance-shaped, long, wide at the base and has its edges slightly turned inwards. The lateral sepals are spreading and downcurved, long and wide at the base and are inclined downwards.

The flowers are held on an upright, narrow but fleshy stalk, blend in with their surrounding and often resemble mosquitoes. The sepals are longer than the petals and usually have a long, thin extension on their end. The dorsal sepal is broader than the lateral ones and sometimes forms a hood over the column. The lateral sepals project forward beneath the labellum and the petals spread widely or curve backwards against the ovary.

The outside of the petal tube is hairy, although not so hairy as the sepals, and glabrous inside apart from a ring of hairs around the ovary. The four stamens are about the same length as the tube, one pair shorter than the other. Flowering occurs mainly from May to October or November and is followed by fruit which is oval in shape, long and densely hairy with the sepals remaining attached.

The lateral sepals and petals are long, wide with their outer surface covered with light red glandular hairs. The lateral sepals and petals are lance-shaped but curved and spread widely. The labellum is more or less egg-shaped when flattened, long and about wide, pink or white with pink blotches. There are golf-stick shape calli along the edges of the labellum and four rows of yellow to white calli in the centre.

In Cyperaceae the perianth (sepals and petals) is often reduced or absent, which results in visible reproductive organs. In C. arctogena the perianth is absent meaning that only the style or stigma may protrude from the narrowed opening. The female flowers have two long thin stigmas which can appear red or brown. The ovary can be defined as superior (the ovary lies above the point of attachment for sepals, petals and stamens.

The base of the aerial stem is glabrous (smooth) and surrounded with pink scales, the upper part of the stem is pubescent and slightly reddened. The flowers are 17 mm across arranged in a one-sided raceme. In the typical form, the sepals are coloured deep pink or purplish-red, the upper petals shorter and paler. The labellum at least as long as the sepals, white with red or yellow spots in the middle.

The flowers are borne singly or in groups of up to six in leaf axils, each with bracts and bracteoles that fall off before the flower opens. The flowers are in diameter on a pedicel long with sepals that have hairy edges. The petals are white. Flowering occurs from August to January and the fruit is a thin-walled, bell-shaped to hemispherical capsule about long and wide with the sepals attached.

Ceratopetalum gummiferum, the New South Wales Christmas bush, is a tall shrub or small tree popular in cultivation due to its sepals that turn bright red- pink at around Christmas time. The petals are actually small and white - it is the sepals that enlarge to about 12mm after the flower sets fruit and starts to dry out. The specific name gummiferum alludes to the large amounts of gum that is discharged from cut bark.

The dorsal sepal curves forward and is long and about wide. The lateral sepals and petals have about the same dimensions as the dorsal sepal although the lateral sepals are slightly wider. The labellum is long, wide and cream-coloured with red lines. The sides of the labellum sometimes have a few short teeth, the tip is curled under and there is a dense band of red or cream-coloured calli along the mid-line.

Habenaria vatia is a tuberous, perennial herb with between three and five upright leaves, long and wide. Between fifteen and twenty five white flowers, long and wide are borne on a flowering stem tall. The dorsal sepal is about long, wide and with the petals, forms a hood over the column. The lateral sepals are about long, wide and spread apart from each other and the petals are a similar size to the sepals.

The flowers are red to yellow, lack spots and are arranged singly in the leaf axils on a stalk which is long. There are 5 sepals which are narrow egg-shaped to triangular and of approximately equal lengths. The petals, which give the flowers their colour are long and joined in a tube with 5 lobes at the end. As with the leaves, the sepals and petals have a dusty covering of short, fine hairs.

The dorsal sepal is erect, long and wide and the lateral sepals are long, wide, upswept and parallel to each other. The petals are long, wide and are arranged in a similar way to the lateral sepals. The labellum is wide, wide and green with a dark red tip. The sides of the labellum have narrow teeth and there are four or more rows of crowded, red calli along its centre, including near its tip.

The lateral sepals are long and wide and spreading widely but with drooping tips. The petals are long and wide and arranged like the lateral sepals. The labellum is long, wide and white to cream-coloured. The sides of the labellum have teeth up to long, the tip of the labellum is curled under and there are four or six rows of calli up to long, along the mid-line of the labellum.

The flowers are usually borne singly, sometimes in groups of up to 3, in leaf axils on a hairy stalk long. There are 5 green to purplish, overlapping sepals which differ in shape from each other, ranging from egg-shaped to lance-shaped and from long. Both surfaces of the sepals are mostly glabrous except for the margins. The petals are long and are joined at their lower end to form a tube.

Caladenia mentiens is a terrestrial, perennial, deciduous, herb with an underground tuber and a single erect, dark green, sparsely hairy, linear leaf, long and about wide. A single whitish or pinkish flower long and wide is borne on a stalk tall. The backs of the sepals and petals are a darker pink colour. The dorsal sepal is erect, long and wide and the lateral sepals are about the same length but slightly wider.

The dorsal sepal is egg- shaped to lance-shaped, green with a central reddish stripe, long, wide, dished and held more or less horizontally. The lateral sepals are lance- shaped, long, about wide and free from each other. The petals are oblong, about long, wide and pink or reddish-brown with pale edges. The labellum is pink to creamy-white, long, wide and turns upwards with the tip extending above the lateral sepals.

Caladenia melanema is a terrestrial, perennial, deciduous, herb with an underground tuber and a single erect, hairy leaf, long and wide. One or two cream-coloured flowers with red markings, long and wide are borne on a stalk tall. The sepals and petals are covered with dark, reddish-brown to black, thread-like tips. The dorsal sepal is erect, long, about wide and the lateral sepals are a similar length but slightly wider.

As with others in the genus, the flowers are inverted so that the labellum is above the column rather than below it. The dorsal sepal is broadly egg-shaped, dished, long and the lateral sepals are narrow oblong, slightly longer than the dorsal sepal and free from each other. The petals are slightly shorter and thinner than the lateral sepals. The labellum is egg-shaped and turns sharply upwards about half way from its base.

The lateral sepals are long and wide, spread apart and curve downwards. The petals are long and wide and arranged like the lateral sepals. The labellum is long, wide and white to cream-coloured with narrow red teeth up to long on the sides. The tip of the labellum is curled under and there are four rows of white and red calli up to long, along the mid-line of the labellum.

Helianthemum apenninum, the white rock-rose, is a white-flowering rock rose found in dry grassy and rocky places across large parts of Europe. Helianthemum apenninum flowers from March to July, and may grow up to 50 cm tall. The flowers are pentamerous, up to 30 mm across, and are white with yellow centres and yellow stamens. The three outer sepals are hairy and striped; the 2 inner sepals are very small.

Caladenia startiorum is a terrestrial, perennial, deciduous, herb with an underground tuber and a single erect, hairy leaf, long and wide. Up to three pink flowers long and wide are borne on a stalk tall. The sepals and petals have thick pinkish to brown glandular tips. The dorsal sepal is erect, long and wide and the lateral sepals are the same size, spread apart from each other with their tips turning downwards.

Its flowers range from green to white to yellow. Its flowers have 3 oval to triangular sepals that are 3-5 by 4-6 millimeters with tips that curve back. The outer surfaces of the sepals are covered in dense gold colored hairs, while the inner surfaces are hairless or only sparsely hairy. Its flowers have 6 petals in two rows of three. The outer, elliptical petals are 10-25 by 9-17 millimeters.

It has 3 oval sepals that are 1 - 1.5 centimeters long and come to a short tapering point at their tip. The sepals are dotted with glands and are hairless on their inner surface but covered in rust colored hairs on their outer surface. Its flowers have 6 fleshy, yellow-green petals in two rows of three. Its narrow oblong outer petals are 2.5-3.5 centimeters long and come to a point at their tips.

The lateral sepals are long, about wide and end with a gland similar to the one on the dorsal sepal. The petals are long, about wide and glabrous. The petals and lateral sepals are linear to lance-shaped near their bases and spread more or less horizontally, but the outer 2/3 is abruptly narrower, yellow-brown in colour and hangs threadlike. The labellum is white with red spots, stripes and blotches, long and wide.

The floral cup is about long and the five sepals are egg-shaped, long. The five petals are deep pink to rose pink, egg-shaped with the narrower end towards the base and long. There are about seventy to ninety stamens and the stigma is wider than the style that is long. Flowering occurs in September and October and is followed by fruit which are urn-shaped capsules with the sepals remaining as erect lobes.

The four sepals are egg-shaped to triangular, long and wide but increase in size as the fruit develops until they are about the same size as the petals. The four petals are long, wide and increase in size as the fruit develops. The eight stamens alternate in length with those near the sepals longer than those near the petals. Flowering from July to October and the fruit are hairy, about long and wide.

Caladenia cucullata is a terrestrial, perennial, deciduous, herb with an underground tuber and a single, sparsely hairy, linear leaf, long and wide. Up to seven white flowers in diameter are borne on a spike high. The lateral sepals and petals are long, wide, narrow elliptic to egg-shaped and spread horizontally. The outer surface is covered with greenish to brownish glands, the inside white and glabrous, with the petals shorter and narrower than the sepals.

The flowers also have parts not distinctly differentiated into sepals and petals, while angiosperms that evolved later tend to have distinctly differentiated sepals and petals. The poorly differentiated perianth parts that occupy both positions are known as tepals. The family has about 219 species and ranges across subtropical eastern North America, Mexico and Central America, the West Indies, tropical South America, southern and eastern India, Sri Lanka, Indochina, Malesia, China, Japan, and Korea.

Each flower has a calyx of sepals with lobes narrowing into bristles. The flower corolla may be nearly 2 centimeters long and is pink and purple with a white tip.

Flowers have 5 green sepals and 5 bell-shaped fused petals, which are blue-violet at the end, descending to purple spots over yellow throats, hence the three for "tri".

The inflorescence is coiled in bud, but generally elongates in fruit. The pedicels are generally 0–1 mm, and the flower is bisexual with the sepals fused below the middle.

The sepals are brightly pigmented. The flower corolla is up to 5 centimeters long, tubular, beaked, and pouched. The stigma protrudes. The fruit is a capsule nearly a centimeter long.

The plant attains a height of about . Its flowers are white. Flowers glabrous white with narrowly lanceolate bracts. Dorsal sepals are erect, obtuse at the tip and prominently 3-nerved.

Their sepals have an oblong, elliptic, or narrowly lanceolate form. The species in the tribe Vanilleae are long plants characterized by long, thick, succulent vines and a lip without spur.

The tubular base of the flower is encapsulated in a hairy calyx of sepals with pointed lobes. The corolla of the flower is yellow and up to 1.5 centimeters long.

Each flower is about long, with one of its white sepals forming a long, thin spur, and two of its yellow-dotted lavender or pink petals extending from the mouth.

The sepals are fleshy, long, about wide and the petals about long and wide. The labellum is about long and wide, fleshy and curved. Flowering occurs from May to June.

The lateral sepals overlap the base of the labellum which is usually white, has a pouched base and a number of stalkless glands. The column is short with two stigmas.

It is a semi-woody perennial that produces yellow flowers in the summer. It is distinguished from the similar Hypericum sphaerocarpum by having unequal sepals and over one hundred stamens.

The flower is enclosed in an inflated, hairy, glandular calyx of fused sepals which is ridged with many veins. It is open at the top, revealing five bright pink petals.

The corolla is curled back at the mouth into small lips. The fruit is a dark colored, hairless body a few millimeters long which develops within the calyx of sepals.

It is a tree with oval or elliptical leaves that come to a point at their tip. Its leaf margins are serrate. Its flowers are axillary. Its sepals are white.

It bears bright pink flowers with heart-shaped petals up to 2 centimeters long flanked by pointed reddish sepals. The fruit is a hairy capsule up to 3.5 centimeters long.

Individual flowers are very large with five sepals and five purple-red petals, measuring up long. The fruits are medium-sized and woody. The fruits may be dispersed by lemurs.

The petals are divided into two almost to their base with the two halves angled apart, so that the two halves of each petal lie over parts of adjacent sepals.

The Pedicels are covered in orange hairs. Its flowers are fragrant and have a nodding habit. Its flowers have 3 (sometimes 4) triangular sepals that are 8-10 millimeters long.

Female flowers have a calyx with sessile laciniae. The ovary is appressed, broadly ovate, apiculate, and denticulate. The style column very short. Sepals of male flowers are subulate and entire.

Bogotá: TOPEMBOS - Universidad Nacional. Segunda edición, 1992, p.p. 146-148. The blossom is long, with about 300 rachilas up to length. The flowers are yellow with sepals and petals long.

The inflorescence is coiled in bud, but generally elongates in fruit. The pedicels are generally 0–1 mm, and the flower is bisexual with the sepals fused below the middle.

Each flower is just under a centimeter long and white to pale blue in color with a yellowish tubular throat. It has a calyx of long, narrow, fuzzy-haired sepals.

The ooline's fruit is brownish, wrinkled, and remains surrounded by five red sepals at its base. Fruiting generally occurs from November to December. The fruit's edibility for humans is not stated.

Flowers are delicate and membranous. Mature plants can have more than 100 flowers. The petals are white with pale pink suffusion. The lateral sepals have dark red spots at the base.

The small flowers form terminal or axillary clusters of small creamy blossoms during spring. The flowers are bisexual. Hypanthium is present. The flowers show 5 sepals, 5 petals and 5 stamens.

Male inflorescences are clustered cymes. Their flowers possess 3.5 mm sepals, 5 mm petals, and 10 stamens. Female flowers are urceolate with 5 mm petals that are recurved at the tips.

Each flower is on a fleshy, densely hairy pedicel 1–1.5 centimeters long. Its flowers have 3, leathery, oval-shaped sepals. Its 6 petals are arranged in two rows of 3.

The ligules are 6–15 mm long and 5–10 mm wide. The florets are bisexual, pistillate, functionally staminate or neuter. The sepals are highly modified. Pollination is done by insects.

A distinctive species distinguished by its erect habit, small creamy-white flowers with acuminate sepals, and coastal habitat. This species has attractive aromatic foliage. Flowers from August- September; fruits September-December.

The sepals are long and wide and the petals are long and wide. The labellum is long and wide and faintly divided into three lobes. Flowering occurs between August and January.

The three sepals and three petals are all similar in size ( long, wide), shape (narrow triangular) and colour. Flowering occurs between December and March in Australia and in August in China.

The plant blooms in large, dense, head-like spikes of many flowers. Each flower has a calyx of hairy sepals and a pale purple-blue corolla up to 1.4 centimeters long.

The petals are similar to sepals. The interiors of the flowers are filled with nectar at base. The flowers usually contain six stamens. The fruits are oblong lilacs or blue berries.

During ripening the sepals enlarge and cover partly the aggregate fruit. Petals white, ovate, corolla 1.5 – 1.8 cm in diameter, stamens 26 – 30. Anthers oblong, 5 – 10 x shorter than filaments.

The false rue-anemone (Enemion biternatum) is similar. It has single flowers that are always white and usually have 5 sepals. They appear individually in leaf axils on a branching stem.

The flower has a disagreeable scent. The three short stamens are located at the bases of the sepals. The style has three long, often curving branches. The fruit is a capsule.

The lateral sepals spread apart from each other and turn towards the back of the galea. The labellum is red becoming darker near the tip. Flowering occurs from October to December.

The sepals are long and the petals white to cream-coloured and long. Flowering occurs from August to October and the fruit is a woody capsule long containing winged seeds long.

The flower has four pointed sepals and no petals. The fruit is a drupe which ripens to bright shiny red. It is just under a centimeter wide and contains two seeds.

The inflorescence is a series of tiny five-lobed white flowers each about 2 millimeters wide. They are surrounded by sepals which are coated in long white hairs with hooked tips.

The hermaphrodite flowers are threefold with double perianth. The three free sepals are symmetrical and pointed. The seeds have a "parachute" similar to the dandelion.Lyman B. Smith , RJ Downs: Tillandsioideae (Bromeliaceae).

The carpels have hair and are fused together. There are five carpels and one pistil. The petals are rounded. The color of the sepals is green to brown; they are ovate.

The inflorescence bears flowers accompanied by hairy, lobed red-green bracts. The flower is up to 2 centimeters long, made up of a dark-veined pink pouch enveloped in darker sepals.

Flowers appear in the axils of the uppermost leaves. Each has a white corolla with five pointed lobes surrounded by hairy green sepals. There are five protruding stamens and two styles.

The sepals are semicircular, about long and wide, the petals elliptical, white, about long and wide. The stamens are free from each other and hairy. Flowering has been observed in November.

Sepals are smaller than those of B. patula, usually less than long.Candolle, Augustin Pyramus de. Mémoires de la Société de Physique et d'Histoire Naturelle de Genève 9(1): 97–98. 1841.

The inflorescence is short cyme of funnel-shaped flowers each just under a centimeter long. The flower has a yellow-throated white corolla set in a calyx of narrow, pointed sepals.

Flowers are terminal and elongated when in fruit. Flowers are radial and can be open or dense in contact from side to side. Sepals are free. Flower color is generally white.

It is covered in prickles. The leaves are up to 18 centimeters long and are divided into several leaflets. Flowers are borne in cymes. Each has three sepals and three petals.

Flowering occurs from August to early October. This subspecies differs from the other two subspecies in having sepals that are less than wide and a labellum that is more than wide.

The flowers are hypogynous, zygomorphic, bisexual, and usually conspicuous. The calyx and corolla are distinct. The calyx is synsepalous, with five sepals. The corolla is sympetalous, with five petals, often bilabiate.

The overlapping petals are arranged in a broad cup shape. The 4-8 petals are oval. The sepals have bristles on the adaxial surface. When solitary, flowers are arranged on scape.

The inflorescence is a cluster a few centimeters wide, with each bearing three white petals surrounded by a few thin sepals. The fruit is a capsule less than a centimeter wide.

Calyx of five, ovato-lanceolate, very hairy, herbaceous sepals, pale and scariose at the margin. Petals five, large, broadly obovate, very glossy yellow. Stamens very numerous. Head of pistils short, oval.

Plants in the genus Medicosma are shrubs or trees that usually have simple leaves arranged in opposite pairs but the leaves are sometimes arranged alternately and sometimes trifoliate. The flowers are usually arranged in cymes, sometimes solitary, in leaf axils and are usually bisexual with four sepals, four petals and eight stamens. The sepals are fused at the base and persist in the fruit. The petals are usually free from each other but usually overlap each other slightly.

In typical modern flowers, the outer or enclosing whorl of organs forms sepals, specialised for protection of the flower bud as it develops, while the inner whorl forms petals, which attract pollinators. Tepals formed by similar sepals and petals are common in monocotyledons, particularly the "lilioid monocots". In tulips, for example, the first and second whorls both contain structures that look like petals. These are fused at the base to form one large, showy, six-parted structure (the perianth).

Thelymitra pulcherrima is a tuberous, perennial herb with an erect, dark green leaf which is egg-shaped near its purplish base, then suddenly narrows to a linear spiral leaf long and wide. Up to seven glossy, variegated flowers wide are borne on a flowering stem tall. The sepals and petals are long, wide and differ in colour. The dorsal sepal is wider than the other sepals and petals, purple with yellow edges and has reddish brown spots and blotches.

The flowers are white and are borne singly or in pairs on short side branches, and are wide on a pedicel long. The floral cup is ridged, about long, the sepals broadly egg-shaped and about long. The petals are long and the stamens long. Flowering mainly occurs from August to November and the fruit is a capsule in diameter with the remains of the sepals attached, but the fruit fall from the plant shortly after reaching maturity.

The sepals are white, sometimes pale pink, spreading but curving upwards, long, with 8 to 12 hairy lobes and two ear-shaped, hairy appendages on the sides. The petals are the same colour as the sepals, egg-shaped to almost round, , spreading with a smooth edge and are joined with the ring of stamens and staminodes, to form a short tube. The style is less than long, straight and glabrous. Flowering time is from September to December.

Thelymitra benthamiana is a tuberous, perennial herb with a single flat, lance-shaped to egg-shaped leaf long and wide. Between two and ten greenish yellow flowers with brownish spots, blotches and patterns, wide are borne on a flowering stem tall. The sepals and petals are long and wide with the labellum (the lowest petal) usually narrower than the other petals and sepals. The column is yellow or greenish, long and wide with broad, fringed wings.

The flower leans forward and the dorsal sepal and petals are fused, forming a hood or "galea" over the column. There is a wide gap between the galea and the lateral sepals which have long, tapering tips, spread apart from each other and held almost horizontally in front of the flower. The labellum is gently curved, greenish with a pink tip and does not protrude through the sinus between the lateral sepals. Flowering occurs in December and January.

Orchids in the genus Sarcochilus are epiphytic or lithophytic monopodial herbs with fibrous stems and long, relatively broad leaves folded lengthwise and arranged in two ranks. The flowers are scented, resupinate and arranged on an unbranched flowering stem, each flower on a short thin stalk. The sepals and petals are free from and similar to each other except that the petals are usually smaller than the sepals. The labellum is hinged to the column and has three lobes.

The dorsal sepal is lance-shaped to narrow egg-shaped, long, about wide and curves downwards. The lateral sepals are linear to lance- shaped, long, about wide and free from each other. The petals are linear to narrow lance-shaped, about long, wide and curve forwards. The labellum is whitish, pinkish, reddish or purplish, broadly lance-shaped to egg-shaped, long, about wide, turns upwards at about 90° near its middle and often reaches above the lateral sepals.

The dorsal sepal and petals are fused, forming a hood or "galea" over the column. The dorsal sepal is lance-shaped to egg-shaped, long and wide, curves forward and has a short point. The lateral sepals are erect, held closely against the galea and joined for most of their length, leaving an opening about wide. The tips of the lateral sepals curve forwards and are about long but do not reach the top of the galea.

Flowers are greenish in color, and often tinged with purple, reddish, or red-brown color. Flowers are subtended by conspicuous long, tapering bracts which are 1–6 cm long, with the lower bracts longer and typically greatly exceeding the length of the flower. Sepals are oval with little or no point, 3–7 mm long and 2–4 mm wide and dark green. Sepals join with petals to form a hood opposite the lower petal of the flower.

The leaf bases remain after the leaf has withered, forming a sheath around the pseudobulb. The flowers are arranged on an unbranched flowering stem which arises from the base of the pseudobulb or rarely from a leaf axil. The sepals and petals are usually thin and fleshy, free from, and more or less similar to each other. The labellum (as in other orchids, a highly modified third petal) is significantly different from the other petals and sepals.

Annales Botanices Systematicae 6(1861)365 erupts from a single elongate spathe at the apex of the stem. The racemose inflorescence bears many purple to crimsonflowers, with the widely opened segments as much as 1 dm from the floral axis. The sepals and petals grow 13–23 mm long, with the petals slightly shorter than the sepals. The lip is adnate to the column to its apex, is cordate where it separates from the column, and is deeply trilobate.

Orchids in the genus Aphyllorchis are leafless, terrestrial, mycotrophic herbs. A few to many flowers are borne on an erect, usually fleshy, unbranched flowering stem. The flowers are resupinate, more or less cup-shaped with the sepals and petals free from each other and similar in length but with the dorsal sepal curving forwards. The labellum is larger than the sepals and petals, boat-shaped and divided into two main sections, an upper "epichile" and lower "hypochile".

Orchids in the genus Tropidia are evergreen, terrestrial, sometimes mycotrophic herbs which form small clumps. They have thin, wiry stems, sometimes with a few branches. The stems have two or more thin, tough, pleated, lance-shaped to egg-shaped leaves. Crowded white, greenish or brown, sometimes resupinate flowers are arranged on the top of the stem and have the sepals and petals free from each other, or with the lateral sepals joined and surrounding the base of the labellum.

Each flower is on a densely hairy pedicel 2-4 millimeters in length. The flowers are unisexual. Its flowers have 3 oval-shaped sepals, 0.8 by 1 millimeters, that have blunt tips. The outer surface of the sepals is densely hairy while the inside is smooth, and their margins have very fine hairs. Its 6 petals are arranged in two rows of 3. The outer petals are white or yellow-green and 2 by 2 millimeters.

The lateral sepals are linear to lance-shaped, long, about wide and free from each other. The petals are egg-shaped to lance-shaped, long, about wide and upswept with brown striations. The labellum is oblong to egg-shaped, long, about wide, curves upwards and tapers towards a narrow tip, sometimes reaching above the lateral sepals. The edges of the labellum are usually not crinkled or wavy but there is a fleshy, green, grooved callus in its centre.

Dendrobium jonesii is an epiphytic or lithophytic herb with dark brownish green pseudobulbs that are long, wide and tapered at both ends. There are between two and seven thin, leathery, dark green leaves long and wide. Between ten and thirty five cream-coloured or white resupinate flowers long and wide are borne on a flowering stem long. The sepals and petals are pointed, the sepals long and wide and the petals a similar length but narrower.

Cryptostylis subulata is a terrestrial, perennial, deciduous, herb with leathery, dark green to yellowish-green leaves which sit on petioles that are anywhere from long. The leaves are lance-shaped and measure long and across. The inflorescences (flower spikes) appear from August to April and bear two to twenty individual flowers on a flowering stem which is tall. Each flower has three green sepals which are long, and two petals which are long and narrower than the sepals.

The lateral sepals are 40–60 mm long, about 3 mm wide and curve downwards. The petals are 30–50 mm long, 2–3 mm wide and arranged like the lateral sepals. The labellum is 10–15 mm long, 7–10 mm wide and creamy-yellow with brown stripes and spots. The sides of the labellum are serrated, the tip is curled downwards and there are two rows of anvil-shaped, cream-coloured calli along the mid-line.

The alpine pearlwort is a small, tufted perennial plant growing from tall. Its stems are semi-erect and the stalked leaves are in opposite fused pairs with slender linear blades, entire margins and blunt tips. The erect flowering stem bears a globular bud followed by a single regular flower about in diameter. It has five turned back sepals, five white, ovate, blunt petals which are the same length as the sepals, ten stamens and five styles.

Minuartia pusilla is a petite annual herb producing a slender, erect stem no more than 5 centimeters tall. The tiny green concave leaves are thready to lance-shaped, up to 5 millimeters long and no more than 1.5 millimeters wide. The tiny flower has five pointed sepals just a few millimeters long. There may be five white petals which are roughly the same length as the sepals or slightly smaller, though sometimes the flowers lack petals.

There are 5 overlapping, reddish-purple, egg-shaped sepals which differ in size from each other, the longest ones while the shortest is long. The outer surface of the sepals is hairy and the inner surface glabrous. The petals are long and joined at their lower end to form a tube. The tube is brown but the petal lobes on its end purplish-blue and up to long, with two of the lobes spreading like rabbits' ears.

Three or four stem leaves are wrapped around the flowering spike. The dorsal sepal and petals are joined to form a hood called the "galea" over the column with the dorsal sepal having a thread-like tip long. The lateral sepals are slightly wider than the galea, densely hairy on their outer edges and suddenly taper to a thread-like tip, . The tips of the lateral sepals are more or less parallel to each other and about apart.

Clarkia williamsonii is an erect annual herb with linear to lance-shaped leaves each a few centimeters long. The inflorescence produces opening flowers and buds which are closed except for the tips, where the sepals do not fuse. The sepals all separate or remain fused in pairs as the flower blooms. Each fan-shaped petal is up to 3 centimeters long and is usually lavender with a white area and a purple spot in the middle.

The four sepals are more or less triangular, green or red, glabrous and long. The four petals are pale to bright pink, white or sometimes green, about the same length as the sepals and have their bases overlapping. The stamens are hairy and the stigma is minute. There are eight stamens in the flowers of plants in Queensland, New South Wales and Tasmania but sometimes only four or six in those of western Victoria and South Australia.

Bulbophyllum windsorense is an epiphytic herb that has pseudobulbs long, wide and partly covered by brown bracts along stems that are long. Each pseudobulb has a stalkless, narrow elliptic to oblong leaf long and wide with a channel on the upper surface. The flowers are long and wide and are arranged singly or in pairs on a flowering stem long. The sepals and petals are fleshy, the sepals long, about wide with tapering, thread-like tips.

The much branched monoecious inflorescence forms below the leaf bases, ringing the trunk with cream-coloured male and female flowers. Both sexes carry three sepals and three petals and in both cases the sepals are two or three times longer than the petals. The inflorescence becomes pendent as the large fruit set; the beaked, ovoid fruit are red to purple to green; each fruit contains one seed.Riffle, Robert L. and Craft, Paul (2003) An Encyclopedia of Cultivated Palms.

The staminate flowers are asymmetrical, white to cream to red, the three sepals are short and imbricate, while the three valvate petals are three or four times as long. There are up to twelve stamens, exserted at antithesis, on elongated, slender to wide filaments. The anthers are dorsifixed, linear and basally sagittate; the pollen is monosulcate and elliptic with tectate, reticulate exine. The pistillate flowers are ovoid with three broad, imbricate sepals and as many valvate petals.

Dipodium pulchellum is a tuberous, perennial, mycoheterotrophic herb and for most of the year, plants are dormant and have no above-ground presence. Between five and forty pink flowers with heavy darker blotches are arranged on a flowering spike long with narrow egg- shaped leaves long at the base. The sepals are long and wide. The sepals and petals are flat and almost straight, unlike those of D. punctatum which are cupped and often slightly curved backwards.

They often appear to be in rounded groups or spikes but in fact are always single, each flower borne on a separate stalk in a leaf axil. Each flower has five sepals and five petals all of a similar size with the sepals often having feathery or hairy lobes. There are usually ten stamens alternating with variously shaped staminodes. The style is simple, usually not extending beyond the petals and often has hairs near the tip.

Petals and sepals are whitish/green with yellow bases and measure by . Each flower has two petals (left and right), two lateral sepals (left and right), and a dorsal sepal, all of which are superficially alike. In the centre of the flower is a modified, funnel-like petal with frilled edges (lip/labellum). The lip is a bright pink-purple colour and surrounds a column which contains the ovaries and also produces pollen at its tip.

Pachystoma pubescens is a deciduous, terrestrial herb with one or two dark green, linear, pleated, sharply pointed leaves long and wide. Between four and ten resupinate, dull pink, more or less tubular, drooping flowers long and wide are borne on a flowering stem tall. The dorsal sepal is long, about wide and the lateral sepals are a similar length but wide with a humped base. The petals are a similar length to the sepals but narrower.

Cyrtostylis rotundifolia is a terrestrial, perennial, deciduous, herb with a single kidney-shaped, egg-shaped, heart-shaped or almost round leaf long and wide. Up to four pink or pinkish green flowers long are borne on a thin flowering stem up to high. The dorsal sepal is erect, linear to narrow lance-shaped and the lateral sepals are narrow linear and somewhat smaller than the dorsal sepal. The petals are similar in size and shape to the lateral sepals.

Dipodium stenocheilum is a leafless, tuberous, perennial, mycoheterotrophic herb. For most of the year the plant is dormant but in summer it produces between three and twenty five white flowers with purple spots and wide are borne on a greenish yellow flowering stem tall. The dorsal sepal is long, wide but the lateral sepals are slightly longer, the petals shorter than both. The sepals and petals are free from each other and flat or only slightly curved backwards.

Each branch of the flowering stem bears between two and ten white, long-lasting flowers on a stalk (including the ovary) long. Each flower is long and wide with the sepals and petals free from and spreading widely apart from each other. The sepals are egg-shaped, long and about wide and the petals broadly egg-shaped to almost square, long and wide. The labellum is white with yellow and reddish markings, about long with three lobes.

The flowers are surrounded by bracts and bracteoles which are hairy on the outer surface and glabrous on the inside. The five sepals are long, with the egg-shaped lobes in two groups, five in one, two in the other with the upper three-lobed "lip" larger than the lower one. The sepals are densely woolly on the outside and mostly glabrous on the inside. The petals are long, forming a bell-shaped tube with five lobes.

Dipodium ensifolium is a tuberous, perennial herb with from one to a few leafy stems long with overlapping sword-shaped leaves long and about wide. Flowering stems long develop in upper leaf axils, each with between two and twenty pink to mauve flowers with purplish spots and blotches, wide. The sepals are long, about wide and the petals are slightly shorter and narrower. The sepals and petals are free from each other and spread widely apart.

The dorsal sepal and petals are fused, forming a hood or "galea" over the column, the dorsal sepal about the same length as the petals and pointed. The lateral sepals are erect with a wide gap between them and the galea and there is a bulging sinus with a deep central notch between them. The tips of the lateral sepals are erect and long. The labellum is bluish, blunt, curved, long and and protrudes above the sinus.

The lateral sepals and petals are turned back towards the ovary, the sepals about and the petals about the same length but narrower. The labellum is about but wider at the base, greenish with a dark purple blotch at its base. The callus resembles a flightless female thynnid wasp and is covered with short, shiny, club-shaped, yellowish brown to brown structures called "calli". The tip of the callus is bulb-shaped and covered with shiny black glands.

The dorsal sepal is lance-shaped to egg-shaped, long, wide and greenish with a brown stripe along its centre. The lateral sepals are oblong to lance-shaped, dark purple, long, wide, joined and twisted together. The petals are purplish with whitish edges, linear to oblong, long and wide. The labellum is purple, oblong to egg-shaped, long, about wide and curves upward about half-way along with the tip just reaching between the lateral sepals.

Plants in the genus Nematolepis are shrubs or small trees with their stems, leaves and sepals covered with shield-like scales. The leaves are simple and arranged alternately. The flowers are arranged singly or in cymes in leaf axils, and have five sepals, five partly overlapping petals and ten stamens, all free from each other in most species. The five carpels are free from each other, each with two ovules and the stigma is not differentiated from the style.

Orchidaceae: Brassolaeliocattleya 'Turanbeat' The orchid family is one of the two largest families of angiosperms (the other is Asteraceae). The shape of the flowers is very distinctive, making orchids easy to recognize. The flower is bilaterally symmetrical. The three sepals are generally colourful and bright (which is why they are sometimes called outer tepals), with one on each side ("lateral sepals") and one usually at the top of the flower ("dorsal sepal"), sometimes forming a hood.

The lateral sepals are long and wide and spreading. The petals are slightly shorter and narrower than the lateral sepals and taper to narrow, thread-like tips. The labellum is red or yellowish-green with red markings and is long and wide. The sides of the labellum sometimes have teeth up to long and there are four or six rows of calli which are long near the base of the labellum but decreasing in size towards its tip.

Sarcochilus weinthalii is a small epiphytic herb with stems long and between three and seven thin, leathery, yellowish green leaves long and wide. Between three and twelve cream-coloured flowers with large purple or reddish blotches, long and wide are arranged on a pendulous stem long. The sepals and petals are elliptic to spatula-shaped and the flowers are sometimes cup-shaped. The dorsal sepal is long and wide whilst the lateral sepals are slightly longer and wider.

The lateral sepals are linear to lance-shaped, long, wide but narrow to a tip similar to that on the dorsal sepal. The petals are similar to the lateral sepals but slightly shorter and narrower. The labellum is whitish or pinkish, sometimes with red markings and is long, wide with erect lateral lobes. There are seven to nine calli about on the sides of the lobes and many short, white-tipped calli along the centre of the labellum.

Caladenia huegelii is a terrestrial, perennial, deciduous, herb with an underground tuber and a single erect, hairy leaf, long and wide. Up to three flowers long and wide are borne on a stalk tall. The flowers are pale greenish-yellow with red markings and the lateral sepals have light brown to yellow, club-like glandular tips. The dorsal sepal is erect, long and wide and the lateral sepals are nearly parallel to each other, long and wide.

The dorsal sepal is erect, long, wide and the lateral sepals are long, wide and spread stiffly near their bases, then turn downwards. The petals are long and wide and arranged like the lateral sepals. The labellum is long and wide with a dark maroon tip. The sides of the labellum have many spreading teeth up to long and there are four or more rows of crowded, deep red calli up to long along its centre.

Cheirostylis notialis is a tuberous, perennial herb with between three and six egg-shaped leaves, long and wide on a petiole long. Up to four resupinate, hairy white flowers, long and wide are borne on a flowering stem tall. The dorsal sepal is long, about wide and fused with the lateral sepals to form a tube. The lateral sepals are a similar size to the dorsal sepal and the petals are the same length but about half as wide.

The floral cup is long and the five sepals are lance-shaped to triangular, glabrous and about long. The five petals are pink-purple to white-cream, lance-shaped to spatula- shaped with the narrower end towards the base and long and wide. There are 12 to 40 stamens long in several rows in each flower. Flowering occurs mainly between September and December and is followed by fruit which are urn-shaped capsules with the sepals remaining.

The sepals are joined for less than half their length to form a bell-shaped tube with five lance-shaped, hairy lobes long. The five petals are off-white, long and joined to form a bell-like tube with five lobes on the end. The two upper lobes have dark purple streaks and are long and smaller than the lower lobes. The upper lobes are shorter than or about equal to the length of the sepals.

The floral cup is about long and glabrous and the five sepals are egg-shaped to triangular and about long. The five petals are mid to deep pink, egg-shaped to almost round and long and there are about 40 to 50 stamens which are about twice as long as the petals. The style is long. Flowering occurs in October and November and is followed by fruit which are urn-shaped capsules with the sepals remaining as erect lobes.

The flowers are usually radially symmetrical but are also found to be bilaterally symmetrical in the genera Aconitum and Delphinium. The sepals, petals, stamens and carpels are all generally free (not fused), the outer flower segments typically number four or five. The outer stamens may be modified to produce only nectar, as in Helleborus and Delphinium. In some genera, such as Thalictrum the sepals are colorful and appear petal-like and the petals can be inconspicuous or absent.

The sepals have intricately branched lobes and hairy appendages and the stamens and staminodes are joined in a ring structure. When Alex George reviewed the genus in 1991 he formally described this section, publishing the description in the journal Nuytsia. The name Intricata is from the Latin word intricatus meaning "entangled" or "complicated" referring to the intricately divided sepals. The type species for this section is Verticordia monadelpha and the other two species are V. mitchelliana and V. pulchella.

The sepals and petals are held stiffly and spread obliquely downwards and are long and wide, tapering to a thread-like end with a densely glandular tip. The dorsal sepal is erect, linear to lance-shaped, about long and about wide at the base. The petals are narrower than the lateral sepals. The labellum is uniformly cream-coloured except for the red fringe on the edges and the red calli in the centre of the labellum.

Flowers are borne on long slender stalks which are glabrous or pubescent, initially spreading and reflexed, later erect. There are five sepals, 5−6.5 mm long, lanceolate, glabrous or pubescent, with an acute apex. The five petals are white, deeply bifid, the cleft extending almost to the base and giving the impression that there are actually ten petals; in length the petals are equal to or slightly longer than the sepals. The flowers are about 10 mm in diameter.

The flowers are silvery-pink to bright mauve-pink and white, sometimes all pale to deep pink. The floral cup is shaped like half a sphere, about long, smooth but hairy near its base. The sepals have a base which is a short, broad strap and are long, with 2 to 4 lobes which have a fringe of coarse hairs. The petals are a similar colour to the sepals, long, egg-shaped with many filaments on their ends.

Papillilabium beckleri is an epiphytic herb with many thin, wiry roots, a single shoot and stems long. Each stem has between two and six linear to lance-shaped, leaves long and wide, often with pink or purple spots. Up to eight pale green or brownish flowers long and wide, sometimes with purple markings, are borne on flowering stems long. The sepals and petals spread widely apart from each other, the sepals about long and wide, the petals slightly narrower.

There are 5 sepals which are densely hairy on the outside surface and 5 petals long. The stamens, which give the flower its colour, are arranged in 5 bundles, each containing 16 to 36 stamens. Flowering occurs from July to November and is followed by fruits which are woody capsules. The capsules are long, more or less cup-shaped, rough and lumpy with the remains of the sepals giving a star-like appearance to the end.

Anemone nemorosa however has palmately lobed leaves and does not have true petals but large sepals which are petal-like.Parnell, J. and Curtis, T. 2012. Webb's An Irish Flora. Cork University Press.

Calyx small with 4 minute, acute sepals. Petals 4, obovate-oblong. Stamens 8, free; anthers ovoid. Ovary seated on an annular disk, 2-locular; each locule with 2-collateral ovules; stigma subcapitate.

The linear leaves are 1 to 3 centimeters long and have rough hairs. The plant bears small, tight clusters of white five-lobed flowers with yellow centers and tiny bristly sepals underneath.

The labellum is white, suffused with pink, has frilly edges and is turned upwards towards the lateral sepals. Flowering occurs from August to October and is stimulated by fire or light disturbance.

The sepals are narrower but longer than petals and are often a different colour. The labellum projects forwards and has three lobes with the side lobes erect and there are two pollinia.

The tubular flowers are long and in diameter with rounded ribbing. The sepals are usually toothed and triangular and about half the length of the petals. Flowering occurs from June to September.

The four sepals are thick, glabrous and egg- shaped, long. The petals are white with blue or pale green backs, broadly elliptic, long and prominently glandular. Flowering occurs from May to October.

The inflorescence is composed of two or three flowers emerging from the leaf axils. Each flower has pointed sepals tipped with awns. The flower has a purplish tube and a pinkish corolla.

R. podophylla is often very shy at flowering, but can cover large areas by means of its spreading rhizomes. The flowers are white, the sepals ageing to green as do the ovaries.

The stem bears 2 to 11 flowers, each in a cuplike calyx of red or green sepals. The five petals are white, under one centimeter long, and divided into irregular toothlike lobes.

Muraltia are perennial, ericoid shrublets or shrubs. Their small flowers and sessile or have short stalks. usually have 3 petals and 5 sepals which are usually subequal. Their fruits contain 2 seeds.

The five sepals are downy, and the margins of the five petals are lined with red dots.McKlintock, D. and R. S. R. Fitter. The Pocket Guide to Wild Flowers. Collins, London. 1956.

Flowering occurs from August to early October. This subspecies differs from the other two subspecies in having lateral sepals that are not strongly upswept and a labellum that is less than wide.

Solitary flowers occur in the leaf axils, each borne on a short pedicel. The small flower has no petals, just four to five blunt-tipped green sepals each a few millimeters long.

The four sepals are egg-shaped, long, wide and hairy on the lower side. The four petals are long. Flowering occurs from August to October and the fruit is a smooth capsule.

The four petals are egg-shaped and leathery, about long with their bases overlapping. The eight stamens are club-shaped with those nearest the sepals slightly longer than those near the petals.

The five sepals are more or less round, fleshy and about long. The five petals are white, elliptic and about long and the ten stamens are hairy. Flowering occurs from August to October.

The sepals are united (gamosepalous). There are six to 40 stamens in one whorl. They are united with the style, forming a gynostemium. The ovary is inferior and is four to six locular.

It has toothed leaf blades borne on winged petioles. The plant blooms in November and December in greenish white double-lipped flowers with green-tipped sepals. Pear-shaped fruits occur soon after.Clermontia pyrularia.

Pterostylis patens is a species of greenhood orchid endemic to New Zealand. Flowering have plants spreading leaves on the flowering stem and a single green and white flower with spreading, tapering lateral sepals.

In the case of A. Veitchii both the petals, sepals, and labellum move inward. Another common cross involving A. sesquipedale is A. Crestwood, which is a cross between A. Veitchii and A. sesquipedale.

The flower has small lance-shaped green sepals and no petals.Wagner, W. L., et al. (1994). Description of a rare new cliff-dwelling species from Kauai, Schiedea attenuata (Caryophyllaceae). Novon 4 187-90.

The four sepals are long and the four petals long. The eight stamens alternate in length. The fruit is a fleshy, more or less spherical drupe long and the seeds are about long.

The leaf margins have shallow rounded teeth. Its petioles are 1-3 centimeter long. It has inflorescences of 25-50 flowers on peduncles 2-8 centimeters in length. Its flowers have 5 [sepals .

Height is . Leaves have three leaflets. Flowers are across, with 5-6 (or up to 20 in double forms) sculpted pink or white sepals and prominent yellow stamens, blooming from midsummer to autumn.

The male flowers have purple sepals and cream-coloured petals, while the female flowers are purple. The ripe fruit has not been recorded, but the immature fruit is globose, long and in diameter.

The flowers are about in diameter on a stalk long. The sepals are egg- shaped to triangular, long and usually have a sharp, pointed tip. There are four glabrous petals and eight stamens.

Flowers have 3 green-brown sepals, 3 blue or purple petals fringed with moniliform trichomes, 5-6 stamens, the three upper of which are bearded with moniliform hairs, and a single tricarpellate pistil.

Each flower is 1 to 4 centimeters wide and lacks petals, having instead petallike sepals which are usually white or sometimes yellow. In the center are many long, flat stamens and fewer pistils.

In the flower the sepals and petals may look similar and are arranged in whorls. There are many stamens. The fruit is a drupe with thin layers of flesh over a large seed.

The sepals fall away from the hip earlier than in other species of rose, hence the name baldhip rose. The leaves are over all, ovular in shape and are toothed on the edges.

The lateral sepals are held close to the galea and have erect, thread-like tips long. The labellum is broad but not visible from outside the flower. Flowering occurs from July to September.

The inflorescence is a raceme about 50 cm long. The bracts are leafy. The stalk of the inflorescense is 2–6 cm long. The sepals are up to 2 mm long and free.

Flowering mainly occurs from December to January and the fruit is a hairy capsule wide with the remains of the sepals attached but that falls from the plant after the seeds are released.

The lateral sepals are joined to each other and the petals face forwards. The labellum is white, turns upwards through about 90° and has a frilly edge. Flowering occurs from September to November.

Each pedicel has 2 bracts. Its yellow flowers are either male or have both male and female reproductive organs. Its flowers have 3 oval to triangular sepals that are 4-6 millimeters long.

The sepal and petals are about long and wide, the petals slightly narrower than the sepals. The labellum is about long and wide with a small callus. Flowering occurs from September to November.

The flowers are wide with long pedicels. The sepals are purple and the four petals of each flower are purple or white with purple veins. The ovoid seeds are about long and wide.

Eremophila reticulata is a flowering plant in the figwort family, Scrophulariaceae and is endemic to Western Australia. It is a dense shrub with egg-shaped leaves, colourful sepals and white or pink flowers.

Eremophila recurva is a flowering plant in the figwort family, Scrophulariaceae and is endemic to Australia. It is a shrub with hairy grey leaves, large grey sepals and blue, mauve or lilac flowers.

Flowers are thin and translucent, with similar petals and sepals. The lip is broad and articulated to the column foot. The column is stout and keeled on the underside. Flowers have four pollinia.

Each flower has rose-colored sepals and petals, the petals fringed and lined with long, pink whiskery hairs. The fruit is a winged capsule 2 or 3 centimeters long containing dark brown seeds.

Caladenia calcicola is a terrestrial, perennial, deciduous, herb with an underground tuber and a single lance-shaped, hairy leaf, long, wide. A single wide is borne on a hairy spike high. (On rare occasions there are two flowers and sometimes the spike is up to high.) The lateral sepals and petals are pale, glossy yellow with a red stripe down the centre. The lateral sepals spread widely, turn downwards, long, wide and taper to thread-like, glandular, yellow to reddish tips long.

The dorsal sepal is linear to egg- shaped, about long and wide and the lateral sepals are more or less lance- shaped, about long, wide and spread widely apart. There is a small, white gland on the tip of the lateral sepals. The petals are linear to egg-shaped, about long and wide with an s-shaped gland on the tip. The labellum is light to dark red, elliptic to egg-shaped with the narrower end towards the base, about long and wide.

The labellum is much larger when compared to their sepals and petals than it is on other species. Moreover, their petals are striped of brown and much smaller than the sepals, showing a greater difference than it is found on the other species. From each other, they can be separated mostly by the shape of the labellum. Scuticaria salesiana presents more rounded intermediate lobe, and Scuticaria peruviana has it more rectangular, with the apex truncated, almost in a straight line.

There are more than 70 bright red stamens long around each flower, the stamens three or four times as long as the petals. Some forms of the plant have white to pale cream-coloured flowers. Flowering occurs from June to November and is followed by fruit which is a broad, urn-shaped capsule, long with the erect sepals attached. The features of this species that distinguish it from others in the Myrtaceae are the red flowers, persistent sepals and deciduous fruit.

The length of the flowering stem ranges from long and the number of flowers from two to two hundred. The flowers are long and wide. The dorsal sepal is longer than the lateral sepals but narrower and the petals are about the same length as the lateral sepals but only half as wide. The labellum has reddish purple spots or streaks and three lobes, the sides lobes erect and curved and the middle lobe pointed, rounded or more or less square.

Caulanthus coulteri is a tall annual herb producing a slender, branching stem lined with generally lance-shaped leaves which may be smooth to sharply sawtoothed along the edges. The widely spaced flowers are somewhat bullet-shaped with coats of pouched sepals which are bright to deep purple when new and fade to yellow- green. The sepals open to reveal dark-veined petal tips with wavy margins. The fruit is a long, thin silique which may approach 13 centimeters in length.

The dorsal sepal and petals are fused, forming a hood or "galea" over the column, the dorsal sepal with a thread-like tip long. The lateral sepals are fused near their base, partly closing off the front of the flower and have erect, thread-like tips long. The sinus between the lateral sepals bulges slightly and is V-shaped. The labellum is long, wide and is sharply kinked or curved, tapered near the tip and protrudes prominently above the sinus.

The short rachis usually bears few rachillae, spirally arranged, each subtended by a small bract. The staminate flowers are asymmetrical and borne in triads with three distinct, valvate sepals and three thick petals. There are around 60 stamens with very short filaments, the elongated, basifixed anthers carry triangle shaped pollen with reticulate, tectate exine. The pistillate flowers become larger than the male's, the three sepals have rounded sides and pointed tips and the petals are asymmetrical with thick valvate tips.

Dendrobium schoeninum is an epiphytic or sometimes lithophytic herb that has thin, upright or pendent stems long, about wide with many branches. The leaves are cylindrical, fleshy, dark green and groved, long and wide. The flowering stems are long and bear between one or two, rarely up to four pale green, cream-coloured or mauve flowers with purple stripes. The sepals and petals spread apart from each other, the sepals long and about wide and the petals a similar length but narrower.

The dorsal sepal and petals are fused, forming a hood or "galea" over the column. The dorsal sepal is more or less erect near its base then suddenly curves forward then below horizontal. The petals are slightly flared and slightly shorter than the dorsal sepal. There is a wide gap between the lateral sepals and the galea and the lateral sepals have thread-like tips which are erect, spread slightly apart from each other and are higher than the galea.

The petals are not flared and are similar in length to the dorsal sepal which ends in a point. There is a wide gap at each side of the flower between the galea and the lateral sepals. The lateral sepals are erect and have a tapering tip, long, only slightly taller than the galea and there is a notch in the bulging sinus between them. The labellum is long, about wide, dark bluish-green, curved and protrudes prominently above the sinus.

Dendrobium bowmanii is an epiphytic or lithophytic herb that has thin, wiry, straggly, spreading or pendent stems up to long and about wide with a few branches. The leaves are cylindrical, dark green, long and about wide. The flowering stems are long and bear between up to four greenish yellow to pale brown flowers long and wide with a few reddish streaks. The sepals and petals spread apart from each other, the sepals long and wide, the petals a similar length but narrower.

Each has a spur up to a fifth inch long, extending back past the sepals (each of the parts of the calyx of a flower, enclosing the petals). The color of H. deflexa is a shade of purple or a light green. The sepals are green and elliptic (adjoined between the spurs) about half the length of the petals above the spur. The fruit of the plant is a capsule, conical in shape, which sticks out from the opening of the flower.

Plants in the genus Jacksonia are mostly leafless shrubs or small trees with rigid branches, and leaves reduced to small scales. The flowers are arranged in spikes or racemes with small bracts or bracteoles. The sepals are joined to form a short tube and the petals are usually shorter than the sepals. The standard or banner petal is circular or kidney-shaped, the wing petals are oblong and the keel petal is more or less straight and wider than the wings.

The dorsal sepal and petals form a hood or "galea" over the column with the dorsal sepal having an downturned, thread-like point long. The lateral sepals turn downwards and are joined for about half their length and shallowly dished with the edges curved inwards. The lateral sepals also suddenly narrow to thread- like tips long which curve forwards with hooked ends. The labellum is brown, fleshy, insect-like, about long, wide and grooved and has long and short bristles around its edges.

The lateral sepals and petals are about the same size as the dorsal sepal, with the petals spreading and the lateral sepals parallel to and often touching each other along their length. The labellum is about 3 mm long and 2 mm wide, pink or white with red bars. The sides of the labellum turn upwards and almost surround the column and the tip is a small yellow triangle with a few blunt teeth on its sides. Flowering occurs in October.

Reichenbach, H. G. "ORCHIDES" in C. Müller, Ed. Walpers Annales Botanices Systematicae Tomus VI Berlin. 1861. pp. 370-371, Nr. 209 The long base of the paniculate inflorescence erupts from two short, broad spathes at the apex of the stem. The yellow flowers have filiform to linear petals, and obovate sepals, the lateral sepals being scoop-shaped. The lateral lobes of the trilobate lip have a crenulate to erose margin, and give the lip (where it diverges from the column) a heart-shape.

Diagram showing the parts of a mature flower. In this example the perianth is separated into a calyx (sepals) and corolla (petals) The perianth (perigonium, perigon or perigone) is the non-reproductive part of the flower, and structure that forms an envelope surrounding the sexual organs, consisting of the calyx (sepals) and the corolla (petals). The term perianth is derived from the Greek περί, peri, meaning around, and άνθος, anthos, meaning flower, while perigonium is derived from gonos, meaning seed, i.e. sexual organs.

The floral cup is top-shaped, about long, smooth and partly hairy. The sepals are creamy-lemon coloured when they open, ageing to pink then red, long and lack lobes but are deeply divided with spreading hairs. The petals are a similar colour to the sepals, more or less round and spreading, about long and wide with a fringe of hairs around their edge. The staminodes are lance-shaped to egg-shaped, tapering towards the tip which is fringed with hairs.

Lepidium densiflorum is an annual or biennial herb producing a short, erect, branching stem up to about 30 centimeters in height. Leaves grow in a basal rosette at the base of the stem and reach up to about 10 centimeters long; leaves higher up on the stem are smaller and less prominently lobed. The plant produces raceme inflorescences of tiny flowers with sepals each only about a millimeter long. There are usually no petals, though sometimes vestigial petals appear near the sepals.

There are a few reddish-brown bracts and bracteoles at the base of the young flower buds but are soon shed. The floral cup is usually glabrous, about long and the sepals are egg-shaped and about long. The petals are about long and the stamens long. Flowering mainly occurs from October to January and the fruit is a capsule about in diameter with the remains of the sepals attached, and that is usually shed from the plant before the next flowering season.

The flowers are often small, with single whorled or absent perianth. Most flowers have either petals or sepals, but not both, known as monochlamydeae, and have pistils and stamens in different flowers, known as diclinous. Except for Brosimum gaudichaudii and Castilla elastica, the perianth in all species of the Moraceae contain sepals. If the flower has an inflexed stamen, then pollen is released and distributed by wind dispersal; however, if the stamen is straight, then insect pollination is most likely to occur.

The single flowers are borne in leaf axils at the end of branches, flower petals spreading, about long, elliptic, white or pink, smooth and the stamens slightly longer than petals. The pedicel long, smooth or with occasional star-shaped soft hairs, fleshy, and enlarged below the sepals. The 2 or 3 bracteoles are near the triangular- shaped calyx lobes, are about long, fleshy, smooth and similar in appearance to sepals. The dry fruit are rounded at the apex with a short beak.

The flowers are usually scented and arranged in corymb-like groups near the ends of the branches, each flower on an erect stalk long. The floral cup is shaped like half a flattened sphere, about long, constricted in the middle, warty and hairy near the base. The sepals are pale pink to magenta, fading to white and sometimes the sepals are white. They are long, with 3 or 4 feathery lobes and have one or two hairs up to long.

Caladenia lateritica is a terrestrial, perennial, deciduous, herb with spheroid, annually replaced tubers situated 8–15 cm below the soil surface and forming a single, hairy, linear leaf, sometimes with purple veining below, long and wide. There are up to three flowers borne on a slender, sparsely silky-hairy raceme, tall. The sepals and petals are spreading, white with various amounts of red dots and stripes on the dorsal petal and lateral sepals. The dorsal sepal is lanceolate to broadly lanceolate, long.

The dorsal sepal is erect, long, wide and the lateral sepals are a similar size but upswept and parallel to each other. The petals are long and about wide and arranged like the lateral sepals. The labellum is long and wide and green with a dark red tip. The sides of the labellum have narrow teeth up to long and there are four or more rows of crowded, red calli up to long along its centre including near its tip.

There are 5 brownish to dark purplish- pink, overlapping sepals which differ in shape from each other, ranging from egg-shaped to lance-shaped and long. Both surfaces of the sepals are hairy and often sticky near the base of the sepal. The petals are long and are joined at their lower end to form a tube. The petal tube is white to pale lilac or deep purple on the outside, while the inside of the tube is white, faintly spotted with lilac.

Goodyera umbrosa is a tuberous, perennial herb with a loose rosette of between four and eight shiny bright green, wavy, egg-shaped leaves, long and wide. Between three and ten resupinate, pale green to pinkish flowers, long and wide are borne on a fleshy flowering stem tall. The dorsal sepal is long, about wide and overlaps the petals, forming a hood over the column. The lateral sepals and petals are a similar size to the dorsal sepal with the lateral sepals spreading downwards.

There are some 219 species in the genus of Allophylus. It has a pale grey bark and glabrous, trifoliolate leaves, which may be deeply to shallow lobed. Its fragrant flowers are small and whitish in clusters of three in dense axillary racemes up to 6 cm, or in 2-3 branched panicles, the fertile flowers being few in a panicle, otherwise male. Sepals greenish-white glabrous, petals as long as the sepals, fringed; stamens longer, filaments hairy at the base.

The lateral sepals are long, about wide and the petals somewhat shorter and narrower. The petals and sepals narrow abruptly at about their midpoint, linear nearer their bases then thread-like towards the ends. The labellum is linear to egg-shaped when flattened, about long and wide, pale yellow or greenish-yellow, maroon in the central part. There are many short, tooth-like calli along the edges of the labellum and four to six rows of greenish to reddish calli in the centre.

The stalks of the flowers and the outside of the sepals and petals are densely covered with woolly hairs. The five sepals are joined only near their bases and are glabrous inside. The petals are pink with purple streaks inside, mostly long and mostly glabrous inside except for a hairy ring just above the ovary and a few long hairs on the lower petal. The petals are joined to form a tube about as long as the speals, with five unequal lobes.