Annual or perennial herbs or shrubs. Hairs basifixed. Leaves usually imparipinnate, rarely palmate or 1-foliolate; leaflets opposite or subopposite, often silky, entire, usually narrowed at base and widest above middle, often with a prominent marginal nerve. Flowers 2 or more together in leaf axils or at the nodes of pseudoracemes, which are sometimes condensed and appearing subcapitate or subumbellate. Calyx 5-lobed, the upper 2 lobes often ± united. Corolla usually reddish-purple; standard pubescent outside. Upper filament lightly attached to others, less often free; other filaments fused for 2/3 to 4/5 of their length. Ovary pubescent, sessile. Pod linear or oblong, ± flattened, beaked, usually dehiscent. Seeds may be longitudinal (long axis parallel to that of pod), transverse or oblique. Aril almost 0 to well-developed. Worldwide: 400 species in warm regions, mostly Africa and Australia Angola: 0 cultivated taxa. Insects associated with this genus:
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