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46. ALCHEMILLA Linnaeus, Sp. Pl. 1: 123. 1753.
羽衣草属 yu yi cao shu
Li Chaoluan (Li Chao-luang); Hiroshi Ikeda, Hideaki Ohba
Herbs perennial (rarely annual), with woody rhizome. Stems decumbent to erect. Leaves stipulate, long petiolate; stipules adnate to sheathing petiole; leaf blade simple, ± orbicular, margin lobed, digitate, or palmately parted. Inflorescences usually dense corymbs, rarely lax cymes or a solitary flower, ebracteate. Flowers very small, bisexual. Hypanthium urceolate, persistent, with constricted throat. Sepals 4(or 5), valvate; epicalyx segments 4(or 5), alternating with sepals. Petals absent. Disk lining hypanthium, margin thickened. Stamens (1–)4; filaments free, short. Carpel 1(–4), sessile or substipitate, free; ovule ascending from base of locule; style basal or adaxial, filiform, glabrous; stigma capitellate. Achene 1(–4), enclosed in membranous hypanthium. Seed basal; testa membranous; cotyledons cylindric-obovoid. x = 8.
Between 100 and 300 species: frigid and temperate regions of Africa, Asia, Europe, and America, extending to alpine areas in the tropics; three species in China.
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| 1 |
Stems and petioles glabrous, or stem only declinate hairy in lower part. |
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3 A. glabra |
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Stems and petioles covered with ascending, spreading, or declinate hairs. |
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(2) |
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| 2 (1) |
Pedicel glabrous or subglabrous; hypanthium abaxially densely or sparsely villous; basal sinus of leaf blade deep and narrow, sometimes with 2 lobes meeting. |
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1 A. japonica |
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Pedicel and hypanthium glabrous; basal sinus of leaf blade broad, sometimes base subtruncate. |
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2 A. gracilis |
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Lower Taxa
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