Annual herbs or subshrubs. Indumentum of equally two-armed hairs, appressed; multicellular and glandular hairs absent. Leaves pinnate, rarely 1–3-foliolate (but never exclusively unifoliolate); stipellae absent. Stipules present, not persistent or spinescent. Inflorescence a pedunculate axillary raceme; flowers pedicellate; bracts caducous. Calyx lobes 5, equal to or longer than the tube, with a broad U-shaped sinus between the upper lobes. Corolla pink, mauve or white; standard glabrous, base narrow, gradually tapering to the claw; wings glabrous; keel glabrous, lateral pockets pouch-like, apex open, ± spathulate. Stamens 10, 9 filaments connate and 1 free; filaments alternating long and short; anthers apiculate, glabrous or anthers of the shorter stamens rarely with scales at the base. Ovary sessile, pubescent; ovules numerous. Style shorter than the ovary, incurved; stigma oblique. Pod usually straight and descending, linear, terete to slightly bilaterally flattened; endocarp never spotted. Seeds cylindrical or cuboidal, never globose, separated by papery outgrowths of the endocarp.
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