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FOC | Family List | FOC Vol. 10 | Fabaceae

56. Aeschynomene Linnaeus, Sp. Pl. 2: 713. 1753.

合萌属 he meng shu

Herbs or shrublets. Vegetative and reproductive parts covered usually with viscid tubercular-based trichomes. Stems erect or creeping, often hollow. Stipules spurred below point of insertion, peltate or unilaterally auriculate, caducous. Leaves paripinnate, 20- to many foliolate, often sensitive; leaflets opposite, subsessile, with 1 midvein or 2 to several primary veins. Inflorescences usually axillary, usually racemose, with several flowers; bracts paired, stipule-shaped, not spurred, persistent or caducous, margin denticu­late. Flower small to medium-sized. Bracteoles present. Hypanthium short. Calyx membranous, usually 2-lipped, abaxial lip 3-lobed, adaxial lip 2-lobed. Corolla usually yellow; standard orbicular, large; wings without an auricle; keels curved, with a small beak. Stamens diadelphous (5+5) or basally connate; anthers uniform. Ovary linear, with numerous ovules; style filiform, inflexed; stigma terminal. Legume a loment, compressed, stipitate, divided into 4-8 articles, surface often muricate. Seed 1 per article.

About 150 species: tropics and subtropics worldwide; two species (one introduced) in China.


1 Stems viscid; leaflets with 2 to several primary veins; legume oblong, slightly curved, abaxial suture undulate and indented; articles rounded.   1 A. americana
+ Stems not viscid; leaflets with 1 midvein; legume linear-oblong, straight, abaxial suture straight and slightly indented; articles quadrate.   2 A. indica

Lower Taxa


 

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