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Annual herbs, with prostrate or spreading habit, pilose. Leaves digitately 3-foliolate. Stipules small or foliaceous, solitary or in pairs. Inflorescences terminal, leaf-opposed, appearing axillary, racemose, 1–5-flowered; bracts and bracteoles inconspicuous. Calyx-tube ± membranous; lobes 5, sub-equal, with the upper two somewhat falcate. Standard-petal ovate or oblong, with a linear claw; wings and keel ± as long as the standard; keel rounded at the apex. Stamens all joined into a tube split on the upper side; anthers 10, small, uniform. Ovary sessile, with numerous ovules; style ± straight. Pod ± oblong or linear, acute, inflated or scarcely so. Seeds numerous.
Pod membranous, sessile, flattened, narrowly pointed-oblong to linear, with the stylar beak projecting forwards, dehiscent, many-seeded.
Standard not exceeding the calyx, yellow or cream-coloured, narrow; keel narrow, ± as long as the wings, bluntly pointed.
Stamens all joined in a sheath open on the upper side; anthers all small, similar, rounded.
Leaves digitately 3-foliolate; stipules single at the nodes in Africa, elsewhere in pairs.
Calyx subequally lobed, the upper lobes largest and slightly curved.
Flowers small, few in leaf-opposed racemes; bracteoles absent.
Seeds oblique-cordiform, small.
Style straight.
Annual herbs.
