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FOC | Family List | FOC Vol. 10 | Fabaceae

60. Smithia Aiton, Hort. Kew. 3: 496. 1789.

坡油甘属 po you gan shu

Damapana Adanson.

Herbs or shrublets. Stems herbaceous or often slightly woody, bristly to glabrescent. Stipules spurred below point of insertion, scarious, persistent, basal portion 1- or 2-auriculate. Leaves opposite, paripinnate, subsessile, few to 12-foliolate, sensitive; rachis often ending in a spine; leaflet blades usually linear-oblong, bristly on abaxial side and margins, apex mucronate. Inflorescences axil­lary, dense racemes or ± scorpioid cymes, sometimes reduced to a solitary flower; bracts stipule-shaped, scarious, striate, caducous. Flowers small. Bracteoles scarious, persistent. Hypanthium short, much reduced. Calyx membranous or scarious, persistent and often accrescent at fruit, 2-lipped, lips usually entire. Corolla white, purple, yellow, or blue, longer than calyx; standard orbicular to ob­long; wings and keel almost as long as standard; keel inflexed, lateral appendages nearly as long as claws, apex blunt. Stamens usually diadelphous (5+5); anthers uniform. Intrastaminal disk present. Ovary linear, with numerous ovules; style filiform, inflexed, persistent to fruit; stigma terminal, small. Legume a loment, plicate within calyx, shortly stipitate, with few to many articles. Seeds orbicular or reniform, compressed; hilum eccentric.

About 20 species: tropics of Asia and Africa; five species in China.

1 Shrublets.   1 S. blanda
+ Annual herbs   (2)
2 (1) Calyx lips membranous, with reticulate veins   (3)
+ Calyx lips scarious, with parallel veins   (4)
3 (2) Leaflet blades 0.6-1.2 cm; inflorescences often with more than 12 flowers; corolla slightly longer than calyx; fruit divided into 6-8 articles.   2 S. ciliata
+ Leaflet blades 1.5-2 cm; inflorescences with 5 or 6 flowers; corolla ca. 1.5 × as long as calyx; fruit divided into 10-12 articles.   4 S. salsuginea
4 (2) Floral nodes congested apically on inflorescence axis; scorpioid cymes and leaves clustered at branch tips.   3 S. conferta
+ Floral nodes not congested apically on inflorescence axis; racemes and leaves not clustered at branch tips.   5 S. sensitiva

Lower Taxa


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