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Pod membranous, sessile, flattened oblong-ovate, narrowed to a straight stylar beak, dehiscent, rather few-seeded.
Standard yellow, not exceeding the calyx, narrow; keel ± as long as the wings, narrow, obtuse.
Leaves mostly digitately 3-foliolate, some upper ones 1-foliolate; stipules paired, narrow.
Flowers small, few in terminal and axillary heads; bracteoles absent.
Calyx subequally lobed, the upper lobes narrow.
Annual or short-lived perennial.
Seeds oblique-cordiform, small.
Style straight.