Thus fig. 38 shows a pentamerous symmetrical flower, with dimerous pistil.
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The flower is pentamerous and ripens into an indehiscent fruit with numerous seeds.
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The vast majority of Asteraceae have pentamerous florets, and several to many florets per flower head. Other asterids that have flower heads with only one floret are Corymbium, Hecastocleis shockleyi, Stifftia uniflora and Fulcaldea laurifolia, but these are pentamerous and hermaphrodite.
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Most basal Eudicots are dimerous or trimerous, with only occasionally pentamerous types which represent homoplasious trends.
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The Flowers in P. dasycaulon is comparatively small, hermaphrodite, short pedicellate, complete, zygomorphic, pentamerous, polypetalous, hypogynous and light cream in colour.
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The male ones have 15 stamens. The fruit is a pentamerous star-shaped capsule, about 2–3 cm in diameter. The seeds are winged.
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The flowers are comparatively small, hermaphrodite, short pedicellate, complete, zygomorphic, pentamerous, polypetalous, hypogynous and light cream in colour with an average length of 1.14 cm.
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The flowers grow in lateral and terminal glomerulus. They are hermaphrodite, pentamerous and actinomorphic, accompanied with scaly silver bracts bigger that themselves. The fruit is an achene.
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Fruit- A schizocarpic mericarp, seed 1 in each mericarp. Classification and Identification(Bentham and Hooker's system)- Class- Dicotyledonae I) Reticulate venation. II) Flower pentamerous. Sub Class- Polypetalae I) Petals free.
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The peripheral flowers are sterile and the internal flowers are hermaphroditic. Both types are actinomorphic and pentamerous, with five petals. Flowering occurs in July through September. The flowers are -insect-pollinated.
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Ekrixanthera hispaniolae is a species of extinct plant first described from fossilised flowers from Dominican amber. It has staminate flowers on short pedicels that are pentamerous, with a pilose pistillode, plus heteromorphic pilose tepals. Differentiating it from Ekrixanthera ehecatli are the presence or absence of a pedicel, the heterotrophic tepals, and the presence or absence of pilosity of its pistillode and tepals. Additionally, the latter characters added to the pentamerous flowers separate the two fossil species from extant genera.
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Ekrixanthera ehecatli is a species of extinct plant first described from fossilised flowers from Mexican amber. Its flowers lack pedicels and are pentamerous and staminate; they have a pistillode with reduced pilosity; glabrous heteromorphic tepals with truncate tips. Differentiating it from Ekrixanthera hispaniolae are the presence or absence of a pedicel, the heterotrophic tepals, and the presence or absence of pilosity of its pistillode and tepals. Additionally, the latter characters added to the pentamerous flowers separate the two fossil species from extant genera.
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Mesotibial spurs are either glabrous or absent. Mesotarsus with 5 distinct tarsomeres (pentamerous). Tarsomeres on hind leg at least as many as on mid leg. Tarsomeres on fore leg at least as many as on mid leg.
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Flowers are pentamerous, white and solitary in auxiliary spikes. M. glauca is usually hermaphroditic or sometimes unisexual by abortion of pollen or ovules. The corolla tube is short with spreading lobes. Flowering occurs in January and February.
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All known specimens of Arkarua are casts that give no clue to the internal structure, making classification problematic. Because of Arkarua's pentamerous symmetry, it is tentatively placed within phylum Echinodermata. Because of its flattened disk- or button-shape, coupled with its pentamerous symmetry, some claim that it can be further classified into the Edrioasteroidea, a class of the echinoderms. This identification remains suspect, as the fossils do not appear to have either madreporites, or plates of stereom, a unique crystalline form of calcium carbonate from which echinoderm skeletons are built.
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The inflorescences are dense pedunculate heads or spikes borne in axillary clusters, or are aggregated in terminal panicles. The tetra- or pentamerous flowers are uniformly bisexual, or male and bisexual. Sepals are connate (i.e. fused) and valvate (i.e.
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This plant differs from all other genera of the Primulaceae in having apetalous flowers with a pink, petaloid calyx. It is generally pentamerous both in the calyx and the seed capsule. The leaves are fleshy, simple and opposite.
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Flower morphology of the Geraniales is rather conserved. They are usually perfectly pentamerous and pentacyclic without fused organs besides the carpels of the superior gynoecium. The androecium is obdiplostemonous. Only a few genera are tetramerous (Francoa, Tetilla, Melianthus).
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White-flowered species are scattered throughout the range of the genus but dominate in New Zealand. Most flowers are pentamerous, with 5 lobes in the corolla and 5 sepals. A few species have 4 to 7 flower parts. The corolla has folds called plicae between the lobes.
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Pentamerous Metamorphosis is an album by Global Communication originally released in 1993 on Dedicated Records. It is a reworking of the Blood Music album by Chapterhouse and was originally only available as a bonus CD bundled with the Chapterhouse album. It was rereleased as a standalone album in 1998.
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The inflorescence is a multi-flowered panicle of 8–18 cm long. The symmetrical star-shaped flowers are pentamerous and pleasantly honey scented. The five triangular green sepals are less than 1 mm long. The five free white petals are long inverted tear-shaped 3–4 mm long and have a pointy tip.
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Members of this genus are shrubs or dwarf shrubs that occupy mountainous habitats. Their leaves are oppositely arranged, small, sessile or sub-sessile, and possess inconspicuous secondary venation. Flowers are tetra- or pentamerous, with the stamens adnate to the white or pink funnelform or salverform corolla. The fruit is a capsule with septicidal dehiscence.
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Myosotis species have pentamerous actinomorphic flowers with 5 sepals and petals. Flowers are typically 1 cm in diameter or less; flatly faced; colored blue, pink, white, or yellow with yellow centers; and born on scorpioid cymes. They typically flower in spring or soon after the melting of snow in alpine ecosystems. They are annual or perennial.
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Like Hecastocleis, some other Asteraceae also have flower heads consisting of a single floret, such as Gundelia, a perennial herbaceous plant from the Middle-East, and Gymnarrhena a winter annual from northern Africa and the Middle-East. Both have male flowers and female flowers, not hermaphrodite as in Hecastocleis, while Gymnarrhena has (trimerous or) tetramerous male florets, not pentamerous.
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Blood Music is the second and last studio album by British shoegazing band Chapterhouse. Early copies of this album, as well as North American and Japanese editions, include the bonus remix CD Pentamerous Metamorphosis by Global Communication. Cherry Red re-issued the album in 2008, prefaced by songs from the "Mesmerise" and "We Are The Beautiful" CD singles.
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It is a climbing shrub, having very long slender, spiked inflorescences with very small pentamerous flowers with short thick club-shaped (clavate) styles. The leathery elliptic leaves (16 cm by 5 cm) are on stems (5-8 mm). The scarcely joined stipules are 1.3 cm long and about 5 mm at the base. The calyx is 1 mm long.
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This plant has a circumboreal distribution. The plant is a succulent perennial growing at the edge of the sea. It has small greenish white pentamerous flowers with 10 stamens in the male flowers borne in the leaf axils.New Flora of the British Isles, Clive Stace, 2005, Cambridge University Press The fruit capsule opens in three valves.
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M. stenopetala features a busy, aromatic inflorescence, organized as dense panicles up to long. The individual flowers are bisexual, radially symmetrical, and pentamerous. The calyx is polysepalous and cream colored, sometimes flushed pink, with long sepals. The corolla is polypetalous and variably white, pale- yellow or yellow-green; its petals are roughly oblong in shape and in length.
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The interpretation of Nanjinganthus as an angiosperm is disputed by Coiro, Doyle & Hilton (2019), who suggest the fossils are more consistent with a conifer, representing either fragmented pollen cones or axes which bore ovuliferous cone scales. Other authors have advanced similar criticisms, particulartly disputing the interpretation of the pentamerous nature of the perianth and supporting the interpretation as a conifer cone.
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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.
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The inflorescences are panicles of 5 cm in diameter and consist of up to fifteen or more flowers at the leaf axil or at the end of branches. Individual flowers are 5–6 mm, mostly pentamerous but possibly occasionally trimerous. The calyx lobes are approximately 1 mm long, narrowly triangular. The petals are white, triangular, 3-4 × 2–3 mm.
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The small flowers are regular and trimerous to pentamerous. They are usually aggregated in axillary racemes or panicles. The flower type varies considerably, most are monoecious, except Combretocarpus; which is hermaphrodite, having perfect flowers. The inferior, tri- or quadrilocular ovary develops into a drupe or a samara (as in Combretocarpus) with usually one seed, but with three or four seeds in Poga.
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There is a root-cap-like structure on the primary growth tip. Covering the entire body is a thick corky periderm, which seems to act as protection as it grows through the soil. Along the ridges of the either pentamerous or hexamerous body, are bumps of meristematic tissue. These bundles can become corky, or differentiate into flower buds, haustoria or lateral branches.
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Brexia is a dense evergreen shrub or small tree of usually around 5 m high, with alternately set, simple, leathery leaves with a short leaf stem and lanceolate to inverted egg-shaped leaf blades. The pentamerous flowers occur in cymes. The petals are greenish white, the samens are alternating with wide, incised staminodes. The superior ovary develops in a long ribbed fruit.
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It is a shrub which measures from 1.5 m to 7 m in height. The leaves are simple, alternate, elliptical to oval in shape, coriaceous (leathery), with a sharp, slight apiculate apex, cuneate base and a crenate margin. The flowers are tetramerous, or sometimes pentamerous, with a white corolla, possibly marked with pink or red. The inflorescence is racemic, producing 10 to 15 flowers per raceme.
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Geniostoma is a genus of around 25 species of flowering plants in the family Loganiaceae. They are shrubs or small trees, with inflorescences borne in the axils of the simple, petiolate, oppositely-arranged leaves. The flowers are arranged in cymes, and each is pentamerous. The name Geniostoma derives from the Greek words ('; "beard") and ('; "mouth"), referring to the hairs in the corolla tube of some species.
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The young growth is covered in yellowish hairs with a velvety texture. The simple leaves are alternate, and oblong to oval with bluntly pointed or rounded tips, glossy, dark green above and pale green below. The leaf edges are often tightly rolled under. The creamy-white flowers are bell-shaped and pendulous, occurring between November and March, are pentamerous with petals and sepals strongly reflexed.
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Developing inflorescences of Vitis vinifera Flower buds are formed late in the growing season and overwinter for blooming in spring of the next year. They produce leaf-opposed cymes. Vitis is distinguished from other genera of Vitaceae by having petals which remain joined at the tip and detach from the base to fall together as a calyptra or 'cap'. The flowers are mostly bisexual, pentamerous, with a hypogynous disk.
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Roussea simplex is a woody climber of 4–6 m high, that is endemic to the mountain forest of Mauritius. It is the only species of the genus Roussea, which is assigned to the family Rousseaceae. It has opposing, entire, obovate, green leaves, with modest teeth towards the tip and mostly pentamerous, drooping flowers with yellowish recurved tepals, and a purse-shaped orange corolla with strongly recurved narrowly triangular lobes.
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Articulata exhibit pentamerous symmetry. The stalk, which consists of numerous disks held together by ligaments, supports a calyx or cup made of circlets of calcerous plates. In Comatulids, the stalk develops following the larval stage, but the juveniles shed all but the topmost disk to take up a free-living existence. Five often branched arms, which consist of articulated series of ossicles, extend from the oral plate and form the food-capture mechanism of Articulata.
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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.
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Eudicots with tetramerous or pentamerous petals may have rotational symmetry of order 4 or 5. Again, whether they also have mirror planes decides whether they belong to dihedral (D4 and D5) or cyclic groups (C4 or C5). The sepals of some monocot flowers develop to replicate the petals, thus, superficially, certain monocots can appear to have rotational symmetry of order 6 and belong to either symmetry group D6 or C6. However, flower symmetry is rarely perfect.
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Flower and leaves It is a shrub (rarely a small tree) reaching tall and broad, with a dense, rounded crown. The leaves are evergreen, persisting 2–3 years, ovate to elliptic, borne in opposite pairs, 4–10 cm long and 2–4 cm broad, with an entire margin. The flowers are small, white or light pink, produced from reddish-pink buds in dense cymes 5–10 cm diameter in the winter. The fragrant flowers are bisexual and pentamerous.
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Walcottidiscus is a genus of pentagonally shaped echinoderms known from the Middle Cambrian Burgess Shale. The genus is thought to be the earliest known, more or less undisputed edrioasteroid. The pentamerous Arkarua is older, dating from the late Precambrian, but with existing fossils of this organism showing no evidence of having stereoms, its status as an edrioasteroid echinoderm remains under much discussion. There are two species of Walcottidiscus recognized, each known from a single, poorly preserved fossil specimen.
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Members of Tibouchina sensu lato are diagnosed by a number of traits including pentamerous flowers with anthers having developed pedoconnectives (the connective tissue below the anther locules) and anther appendages that are ventrally bi-lobed. These traits are likely plesiomorphic in the core Melastomeae. The magenta or purple flowers are often showy, and the stamens may be dimorphic. Members of Tibouchina have simple leaves that lack stipules with the conspicuous ladder-like venation that is characteristic of most melastomes.
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The golden-yellow flowerheads, on 5–15 cm long peduncles, appear at the phyllode axils. Flower parts are pentamerous, with the sepals fused into a synsepalous calyx. Flowers appear from August to October, followed by irregularly twisted, glaucous, brown seed pods which are 3 to 6 cm long and 3 to 6 mm wide. Its occurs naturally in Western Australia, South Australia and Victoria and is listed as endangered under the Threatened Species Conservation Act in New South Wales.
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They are hermaphroditic, actinomorphic (radially symmetrical, like in Geranium) or slightly zygomorphic (with a bilateral symmetry, like in Pelargonium). The calyx and the corolla are both pentamerous (with five lobes), petals are free while sepals are connate or united at the base. The androecium consists in two whorls of five stamens each, some of which can be unfertile; the pistil consists of five (less commonly three) merged carpels. The linear stigmas are free, and the ovary is superior.
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Starfish fossil, Riedaster reicheli Members of the order Asteroidea are characterised by a star-shaped body plan consisting of a central disc and multiple radiating arms. They usually exhibit pentamerous radial symmetry, but some species typically have a symmetry based on a number other than five. The arms have very broad bases and their skeletal support is provided by the calcareous plates called ossicles or ambulacral plates in the body wall. These are joined with muscular and connective tissue giving flexibility.
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Plant- Undershrub, with mucilaginous juice, aerial, erect, cylindrical, branched, solid, green. Leaves- Alternate, simple, lanceolate to linear, rarely ovate to oblong, obtuse at the base, acute at the apex, coarsely and remotely serrate; petiole much shorter than the blade; stipulate, stipules free-lateral, unequally paired at the node, reticulate venation. Inflorescence- Cymose Flower- Small, axillary, 2-3 in a cluster; pedicels jointed at the middle, epicalyx absent, complete, bisexual, regular, actinomorphic, hypogynus, pentamerous, yellow. Calyx- Sepals 5, gamosepalous, campanulate, slightly accrescent, persistent, valvate.
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Gymnarrhena has aerial inflorescences that consist of many individual flower heads with disk florets which are either functionally male, with few florets each, or female with one floret only. This is a rare character combination, that is further known from the inflorescences of Gundelia. The latter however is a much larger, erect, thistle-like plant, which has latex and pentamerous florets. In Gymnarrhena the male florets (the only ones where a judgement can be made without enlargement) are (tri- or) tetramerous.
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A few, such as Acer laevigatum (Nepal maple) and Acer carpinifolium (hornbeam maple), have pinnately veined simple leaves. Acer rubrum (red maple) flowers Maple species, such as Acer rubrum, may be monoecious, dioecious or polygamodioecious. The flowers are regular, pentamerous, and borne in racemes, corymbs, or umbels. They have four or five sepals, four or five petals about 1 – 6 mm long (absent in some species), four to ten stamens about 6 – 10 mm long, and two pistils or a pistil with two styles.
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In the axis of the leaf mostly single (but occasionally up to four) pendulous flowers arise on a flowerstem of about 2 cm long that is covered in felty hairs. These flowers are mostly pentamerous (but sometimes 4-merous), large and robust, measuring approximately 2½ cm. The flowers have a slightly sweet scent reminiscent of yeast, a possible adaptation to the preference of the gecko pollinator. The anthers are ripe before the stigmas, meaning that individual flowers are first male and subsequently female (or protandrous).
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The band's second album Blood Music, stylistically different, was released in 1993. Singles from the album, "She's a Vision" and "We Are the Beautiful", were relatively successful. Some copies of Blood Music included a bonus disc "retranslated" by Global Communication, called Pentamerous Metamorphosis that was withdrawn due to a sampling lawsuit, but later reissued in a slightly altered version. The band then released no further new material other than a double album, Rownderbowt in 1996, compiling their singles, various B-sides, rarities and unreleased demos which featured Slowdive drummer Simon Scott.
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The inflorescence is often many-branched and bracteate. The flower clusters are red, yellow, or white. The flowers are often apopetalous (separate corolla segments), pentamerous (five-parted), actinomorphic (radially symmetrical), except for the zygomorphic Tylecodon grandiflorus, with one to two whorls of 4–20 sepals that are usually as many as or twice as many as the number of petals and two whorls of stamens, five in each whorl (i.e. as many as or twice the number of petals), with their filaments either free or fused to the petals at the base and sometimes unequal.
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Echinoderms are also the largest phylum that has no freshwater or terrestrial (land-based) representatives. Aside from the hard-to-classify Arkarua (a Precambrian animal with echinoderm-like pentamerous radial symmetry), the first definitive members of the phylum appeared near the start of the Cambrian. One group of Cambrian echinoderms, the cinctans (Homalozoa), which are close to the base of the echinoderm origin, have been found to possess external gills used for filter feeding, similar to those possessed by chordates and hemichordates. The echinoderms are important both ecologically and geologically.
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A closeup of the flowers Flowers are pentamerous with (usually) five stamen, a five-lobed calyx tube and a five-petalled corolla, the latter bright yellow and an wide. The flowers are almost sessile, with very short pedicels (2 mm, 0.08 in). The five stamens are of two types, with the three upper stamens being shorter, their filaments covered by yellow or whitish hairs, and having smaller anthers, while the lower two stamens have glabrous filaments and larger anthers.They are all hairy in subspecies V. crassifolium and V. giganteum.
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Some proposals on the infrageneric classification of Drosera L. Taxon, 43: 583-589. Subgenus Thelocalyx was first described by Jules Émile Planchon in 1848 and was later moved to the rank of subgenus in 1891 by Carl Georg Oscar Drude. It was later moved back to sectional rank by Rüdiger Seine and Wilhelm Barthlott in 1994. In 1996, Jan Schlauer revised the infrageneric taxonomy and supported the subgeneric rank, citing the pentamerous gynoecium and suggesting that the two species are relatively primitive with respect to other species in the genus.
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Strasburgeriaceae is a small family of flowering plants in the order Crossosomatales, endemic to New Zealand and New Caledonia. It contains two genera, Strasburgeria and Ixerba. Both genera have simple, evergreen, alternated leaves, often in worl-like clusters, with gland-tipped serrations, hermaphroditic, pentamerous flowers with persistent sepals, clawed petals, flat and long filaments that extend beyond the petals and a persistent style with a punctiform stigma. Fossil pollen named Bluffopollis scabratus, found in deposits from the Paleocene to the Miocene, is almost identical to the pollen of Strasburgeria, although only half its size.
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Brexia is a deviant genus, that was assigned early on to the Brexiaceae or Brexioideae, together with two other enigmatic, monotypic genera, Ixerba and Roussea. The common characters between these taxa are few and are shared with many other Pentapetalae. These common characters include that they are all small trees or shrubs with simple leathery evergreen leaves, with an entire or serrated margin, and pentamerous flowers set individually or in cymes in the axil of the leaves. Botanist have differed on the rank and placement of these three genera.
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Others have large, showy flowers, usually pentamerous and white, some with varying amounts of yellow or ultraviolet, others with prominent rose or brown veins and anthers. These are fully to predominantly outcrossing, usually pollinated by species of solitary bees in the genera Panurginus, Andrena and Hesperandrina. The Flora of North America Project has chosen a line drawing of Floerkea to serve as its logo because of this taxon's ubiquitous (but obscure) occurrence in many areas of North America, and the diverse aspects of the family including economic and horticultural value, endangered species status and fruitful subject of scientific research.
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The shape of the leaf blades of the V. phoeniceum can be elliptical, ovate, chordate or lanceolate depending on the environment in which it grows in. Five-petaled flowers appear when in bloom, where it grows as an inflorescence with multiple flowers on a spike starting with the first blooms on the bottom of the spike and newer ones upwards of the spike. V. phoeniceum exhibits pentamerous growth of perianth and corolla that is characteristic of the dicotyledonus mulleins. The flowers can be deep purple in color (violetta) to pink (rosetta) and white (flush of white).
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Comaster schlegelii from East Timor Like other echinoderms, comatulids have pentamerous symmetry as adults though the larvae have bilateral symmetry. Late in their development, the larvae are attached to the seabed by a stalk, but this is broken at metamorphosis and the juvenile crinoid is free living. The body has an endoskeleton made from a number of articulated calcareous plates known as ossicles covered by a thin epidermis. It is in the shape of a cup (the calyx) with a lid (the tegmen) which has a central mouth and an anus near the edge, the gut being U-shaped.
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These flowers are said to be fragrant, white, small, about 2 mm in diameter, and tetra- or pentamerous, the petals are yellowish. They contain only two free stamens, lying side-by-side, consisting of a filament of 1½-2½ mm long topped with an orbicular anther of ½-¾ mm, borne outside the disc and a short sterile pistil in the middle. Female flowers are mostly in cymes at the end of the branches. The conical fruit is a light red drupe of about 2 cm, with the calyx still present at its base, and it contains a single basal seed.
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General: Crassulaceae is a family of morphologically diverse terrestrial perennial, rarely annual or hapaxanthic (flowering once in a lifetime), flowering plants that demonstrate xerophytic adaptations, with thick succulent leaves, a thick waxy cuticle and Crassulacean acid metabolism. Crassulaceae are generally herbaceous but there are some subshrubs, and relatively few treelike, epiphytic (growing on surface of plants), scandent (vine like) or aquatic plants. Most species are herbaceous leaf succulents, with regular 5 part (pentamerous or fivemerous) flowers, isomerous free carpels and one or two whorls of stamens. Vegetative: Stems are sometimes succulent, as may also be the underground caudices (rootstock), and may form rhizomes or corms.
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Conceived in the early nineties, Global Communication was another collaborative project of Pritchard and Tom Middleton, and its output was predominantly ambient. Most of the material was released on Dedicated Records and comprises eight singles/EPs and two albums, including Pentamerous Metamorphosis, a reworking of the Chapterhouse album Blood Music. They also released the album 76:14 (named after its duration) which The Guardian featured in their 1,000 Albums to Hear Before You Die list, describing it as an "unfathomably beautiful out-of-time masterpiece." Perhaps their most well known release was 1996's The Way / The Deep EP, considered by some to be a house classic.
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Some are andromonoecious, polygamomonoecious, or even dioecious (as in Acronema), with a distinct calyx and corolla, but the calyx is often highly reduced, to the point of being undetectable in many species, while the corolla can be white, yellow, pink or purple. The flowers are nearly perfectly pentamerous, with five petals, sepals, and stamens. The androecium consists of five stamens, but there is often variation in the functionality of the stamens even within a single inflorescence. Some flowers are functionally staminate (where a pistil may be present but has no ovules capable of being fertilized) while others are functionally pistillate (where stamens are present but their anthers do not produce viable pollen).
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