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Herbs perennial or annual, sometimes subshrubs or herbaceous or woody vines. Leaves basal and cauline, alternate, rarely opposite or whorled, simple or variously compound, palmately nerved, rarely penninerved, with or without stipules. Inflorescence a simple or compound monochasium, dichasium, simple or compound raceme, or flowers solitary. Flowers bisexual, sometimes unisexual, actinomorphic, rarely zygomorphic, hypogynous. Sepals 3--6 or more, free, petaloid or sepaloid, imbricate or sometimes valvate in bud. Petals present or absent, 2--8 or more, free, usually with nectaries. Stamens numerous, rarely few, free; filaments linear or filiform; anthers latrorse, introrse, or extrorse; sometimes some sterile stamens becoming staminodes. Carpels numerous or few, rarely 1, free, rarely connate to various degrees; ovary with 1 to many ovules. Fruit follicles or achenes, rarely capsules or berries. Seeds small, with abundant endosperm and minute embryo.

About 60 genera and 2500 species: worldwide, but richly represented in N temperate regions, particularly in E Asia; 38 genera (four endemic) and 921 species (604 endemic) in China.^[1]

Taxonomy

Genera

Abelemis

More info about the Genus Abelemis may be found here.

Acetaea

More info about the Genus Acetaea may be found here.

Aconitella

At least 12 species and subspecies belong to the Genus Aconitella.

More info about the Genus Aconitella may be found here.

Aconitopsis

At least 8 species and subspecies belong to the Genus Aconitopsis.

More info about the Genus Aconitopsis may be found here.

Aconitum

Herbs, perennial, from tubers or elongate, fascicled roots. Leaves basal and cauline, proximal leaves petiolate, distal leaves sessile or nearly so; cauline leaves alternate. Leaf blade palmately divided into 3-7 segments, ultimate segments narrowly elliptic or lanceolate to linear, margins incised and toothed. Inflorescences terminal, sometimes also axillary, 1-32(-more) racemes or panicles, to 28 cm; bracts leaflike, not forming involucre. Flowers bisexual, bilaterally symmetric; sepals not persistent in fruit; lower sepals (pendents) 2, plane, 6-20 mm; lateral sepals 2, round-reniform; upper sepal (hood) 1, saccate, arched, crescent-shaped or hemispheric to rounded-conic or tall and cylindric, usually beaked, 10-50 mm; petals 2, distinct, bearing near apex a capitate to coiled spur, concealed in hood, long-clawed; nectary present, on spur; stamens 25-50; filaments with base expanded; staminodes absent between stamens and pistils; pistils 3(-5), simple; ovules 10-20 per pistil; style present. Fruits follicles, aggregate, sessile, oblong, sides prominently transversely veined; beak terminal, straight, 2-3 mm. Seeds deltoid, usually with small, transverse, membranous lamellae. x =8.^[2] [more]

At least 1,259 species and subspecies belong to the Genus Aconitum.

More info about the Genus Aconitum may be found here.

Actaea

Herbs perennial. Rhizome robust, creeping, with numerous fibrous roots. Stems simple, erect. Basal leaves scaly; cauline leaves alternate, 2 or 3 × ternate, long petiolate. Inflorescence racemose, simple or branched. Flowers small, actinomorphic. Sepals usually 4, petaloid, white, caducous. Petals 1--6, spatulate, yellow, smaller than sepals, without a nectary. Stamens numerous; filaments narrowly linear-filarious; anthers yellowish white, ovate-orbicular. Carpels 1; ovary ellipsoid, glabrous, stigma sessile, compressed, 2-lobed. Fruit a berry, purple-black, red, or white when ripe, subglobose. Seeds several, ovate, brown or black.^[3] [more]

At least 201 species and subspecies belong to the Genus Actaea.

More info about the Genus Actaea may be found here.

Actinospora

At least 4 species and subspecies belong to the Genus Actinospora.

More info about the Genus Actinospora may be found here.

Adonanthe

At least 20 species and subspecies belong to the Genus Adonanthe.

More info about the Genus Adonanthe may be found here.

Adoniastrum

More info about the Genus Adoniastrum may be found here.

Adonis

Herbs, annual, or perennial from stout rhizomes. Leaves basal and cauline (cauline often absent at flowering time), proximal leaves petiolate, distal leaves sessile; cauline leaves alternate. Leaf blade 1-3-pinnately dissected, segments narrowly linear, margins entire or with occasional tooth. Inflorescences terminal, flowers solitary; bracts absent. Flowers bisexual, radially symmetric; sepals not persistent in fruit, 5(-8), nearly colorless or green, plane, obovate, 6-22 mm, apex ± erose; petals 3-20, distinct, yellow to red [white], often striped or basally darkened with black, purple, or blue, plane, oblanceolate, 8-35 mm; nectary absent; stamens 15-80; filaments filiform; staminodes absent between stamens and pistils; pistils ca. 20-50, simple; ovule 1 per pistil; style present. Fruits achenes, aggregate, sessile, nearly globose, sides veined or rugose; beak terminal, straight or strongly curved, 0.5-1 mm. x =8.^[4] [more]

At least 168 species and subspecies belong to the Genus Adonis.

More info about the Genus Adonis may be found here.

Aerides

Aerides or the Cat's-tail Orchid or the Fox Brush Orchid, is a genus belonging to the Orchid family (Orchidaceae) (subfamily Epidendroideae, tribe Vandeae, subtribe Sarcanthinae). This genus is abbreviated Aer in horticultural trade. [more]

At least 175 species and subspecies belong to the Genus Aerides.

More info about the Genus Aerides may be found here.

Aeschynanthus

Shrubs or climbers, epiphytic or epipetric, not rhizomatous. Stems often pendent, branched or unbranched. Leaves usually many, along stem, opposite, sometimes whorled, equal to subequal in a pair; leaf blade glabrous, rarely puberulent or pubescent, base cuneate to rounded or attenuate. Inflorescences umbel-like, lax or sometimes dense, axillary or pseudoterminal, 1-10-flowered cymes; bracts 2, opposite. Calyx actinomorphic, 5-sect from base to 5-lobed; segments equal, rarely unequal. Corolla red to orange, seldom greenish, yellow, or white, zygomorphic, inside sparsely puberulent, sparsely glandular puberulent, glabrous, or with a hair ring; tube narrowly tubular to funnelform-tubular, often curved, not swollen, much longer than limb, 0.4-1.5 cm in diam.; limb indistinctly or distinctly 2-lipped; adaxial lip 2-lobed; usually equalling, occasionally to 1/2 X length of abaxial lip; abaxial lip 3-lobed, lobes equal or subequal, apex rounded to acute. Stamens 4, adnate to corolla tube near or above middle, usually exserted; anthers basifixed, usually coherent in pairs at apex, thecae parallel, not confluent, dehiscing longitudinally; connective not projecting; staminode 1 or absent, adnate to adaxial side of corolla tube. Disc ringlike. Ovary linear, 1-loculed; placentas 2, parietal, projecting inward, 2-cleft. Stigma 1, terminal, capitate to depressed-globose, undivided. Capsule straight in relation to pedicel, linear, much longer than calyx, dehiscing loculicidally to base; valves 2 or 4, straight, not twisted. Seeds with 1(or 2-50) hairlike appendages, opposite end with 1 hairlike appendage, seldom 1 linear appendage at each end.^[5] [more]

At least 324 species and subspecies belong to the Genus Aeschynanthus.

More info about the Genus Aeschynanthus may be found here.

Aiolon

More info about the Genus Aiolon may be found here.

Anamenia

At least 10 species and subspecies belong to the Genus Anamenia.

More info about the Genus Anamenia may be found here.

Anemanthus

More info about the Genus Anemanthus may be found here.

Anemoclema

Plant perennial. Rhizome present. Sheath flat, sometimes narrowly winged. Leaves 4--7, basal, petiolate, pinnatisect to pinnatipartite; veins conspicuous. Involucral bracts 3, verticillate, pinnatilobate. Inflorescences umbelliform; bracteoles opposite. Flowers bisexual. Sepals 5, bluish purple, petaloid. Petals absent. Pistils sessile. Ovary 1-ovuled, densely villous. Styles slender, persistent, 6 × longer than ovary. Achenes densely villous. ^[6] [more]

More info about the Genus Anemoclema may be found here.

Anemonanthaea

More info about the Genus Anemonanthaea may be found here.

Anemonanthea

At least 5 species and subspecies belong to the Genus Anemonanthea.

More info about the Genus Anemonanthea may be found here.

Anemonastrum

At least 30 species and subspecies belong to the Genus Anemonastrum.

More info about the Genus Anemonastrum may be found here.

Anemone

Herbs, perennial, from rhizomes, caudices, or tubers. Leaves basal, simple or compound, petiolate. Leaf blade lobed or parted or undivided, reniform to obtriangular or lanceolate, margins entire or variously toothed. Inflorescences terminal, 2-9-flowered cymes or umbels, or flowers solitary, to 60 cm; involucres present, often with primary involucres subtending inflorescences, and secondary and tertiary involucres subtending inflorescence branches or single flowers (primary, secondary, and tertiary involucres appearing to be in tiers), involucral bracts 2-7(-9), leaflike or sepaloid, distant from or close to flowers. Flowers bisexual, radially symmetric; sepals not persistent in fruit, 4-20(-27), white, purple, blue, green, yellow, pink, or red, plane, linear to oblong or ovate to obovate, 3.5-40 mm; petals usually absent (present in A. patens ), distinct, plane, obovate to elliptic, 1.5-2 mm; nectary present; stamens 10-200; filaments filiform or somewhat broadened at base; staminodes absent between stamens and pistils; pistils many, simple; ovule 1 per pistil; style present. Fruits achenes, aggregate, sessile or stalked, ovoid to obovoid, sides not veined; beak (persistent style) present, sometimes rudimentary, terminal, straight or curved, to 40(-50) mm, sometimes plumose. x =7 or 8.^[7] [more]

At least 1,024 species and subspecies belong to the Genus Anemone.

More info about the Genus Anemone may be found here.

Anemonella

Thalictrum thalictroides, the rue anemone, is a plant in the buttercup family, Ranunculaceae. [more]

At least 28 species and subspecies belong to the Genus Anemonella.

More info about the Genus Anemonella may be found here.

Anemonidium

At least 11 species and subspecies belong to the Genus Anemonidium.

More info about the Genus Anemonidium may be found here.

Anemonoides

At least 61 species and subspecies belong to the Genus Anemonoides.

More info about the Genus Anemonoides may be found here.

Anemonopsis

At least 3 species and subspecies belong to the Genus Anemonopsis.

More info about the Genus Anemonopsis may be found here.

Anetilla

More info about the Genus Anetilla may be found here.

Anthora

More info about the Genus Anthora may be found here.

Aphanostemma

More info about the Genus Aphanostemma may be found here.

Aquilegaia

More info about the Genus Aquilegaia may be found here.

Aquilegia

Herbs, perennial, from slender woody rhizomes. Leaves basal and cauline, proximal leaves petiolate, distal leaves sessile; cauline leaves alternate. Leaf blade 1-3×-ternately compound, leaflets lobed or parted, margins crenate. Inflorescences terminal, 1-10-flowered cymes or solitary flowers, to 30 cm; bracts leaflike, not forming involucre. Flowers bisexual, radially symmetric; sepals not persistent in fruit, 5, white to blue, yellow, or red, plane, narrowly ovate to oblong-lanceolate, short-clawed, 7-51 mm; petals 5, distinct, white to blue, yellow, or red, oblong to rounded or spatulate blade, 0-30 mm, base backward-pointing tubular spur, apex plane; nectary in ± enlarged tip of spur; stamens many; filaments filiform; scalelike staminodes usually present between stamens and pistils; pistils 5-10, simple; ovules many per pistil; beak present. Fruits follicles, aggregate, sessile, cylindric, sides prominently veined; beak terminal, straight, 3-26 mm. Seeds black, obovoid, smooth. x = 7.^[8] [more]

At least 810 species and subspecies belong to the Genus Aquilegia.

More info about the Genus Aquilegia may be found here.

Aquilina

More info about the Genus Aquilina may be found here.

Aranda

At least 4 species and subspecies belong to the Genus Aranda.

More info about the Genus Aranda may be found here.

Arcteranthis

More info about the Genus Arcteranthis may be found here.

Arsenjevia

At least 4 species and subspecies belong to the Genus Arsenjevia.

More info about the Genus Arsenjevia may be found here.

Arthropodium

Arthropodium is a genus of herbaceous perennial plants native to the Southern Hemisphere. It is sometimes placed in the family Asphodelaceae. [more]

At least 42 species and subspecies belong to the Genus Arthropodium.

More info about the Genus Arthropodium may be found here.

Aspidophyllum

At least 3 species and subspecies belong to the Genus Aspidophyllum.

More info about the Genus Aspidophyllum may be found here.

Asteriscus

Asteriscus may refer to: [more]

At least 57 species and subspecies belong to the Genus Asteriscus.

More info about the Genus Asteriscus may be found here.

Asteropyrum

Herbs perennial. Rhizomes short, fibrous. Leaves basal, simple, papery, abaxially glabrous, adaxially sparsely strigose, base nearly truncate, distinctly peltate; leaf blade ± palmately lobed. Scapes 1--3; bracts usually opposite, ovate to broadly ovate, ca. 3 mm. Flowers terminal, solitary, actinomorphic, bisexual. Sepals 5, white, petaloid, obovate, apex rounded. Petals 5--8, golden yellow, ca. 1/2 as long as sepals, suborbicular, glabrous, long ligulate. Stamens numerous, slightly longer than petals, glabrous; filaments narrowly linear, 1-veined; anthers yellow, oblong, ca. 1 mm. Pistils 5--8, erect; ovary oblong, apex attenuate into a short style; ovules many. Follicles widely divergent, suboblong, ca. 8 mm, without prominent transverse veins on lateral surfaces, persistent styles short. Seeds brownish, ellipsoid, ca. 1.5 mm.^[9] [more]

At least 4 species and subspecies belong to the Genus Asteropyrum.

More info about the Genus Asteropyrum may be found here.

Atragene

Atragene was formerly a genus of flowering plants within the buttercup family Ranunculaceae. It is now obsolete as a genus. [more]

At least 37 species and subspecies belong to the Genus Atragene.

More info about the Genus Atragene may be found here.

Barneoudia

At least 7 species and subspecies belong to the Genus Barneoudia.

More info about the Genus Barneoudia may be found here.

Batrachium

Herbs perennial or annual, aquatic or semiterrestrial, with stems and leaves often submersed. Leaves alternate, subsessile to long petiolate, leaf blade usually submersed, 2--5 × dissected, ultimate segments filiform or narrowly linear, sometimes floating and then blade 3-lobed, not finely dissected. Inflorescence a solitary, leaf-opposed flower. Flowers bisexual, actinomorphic. Receptacle conical or subulate. Sepals (4 or) 5, caducous. Petals (4 or) 5, usually white, with yellow base, rarely entirely yellow, obovate, base shortly clawed, with a nectary pit above claw, apex rounded. Stamens few or numerous; anthers latrorse. Carpels numerous; ovule 1 per carpel.