Standard subcircular, yellow or orange, marked darker, usually puberulous along midvein outside; wings exceeding keel; keel 9–12 mm long, strongly rounded about the middle with a short slightly incurved beak, lanate-pubescent towards base of upper margin, rarely sparsely so.
Leaves 3-foliolate; leaflets 1–5 × 0.5–3 cm, broadly oblanceolate, elliptic or obovate, sparsely pilose on both surfaces; petiole slender, shorter to a little longer than leaflets; stipules 1–4 mm long, filiform, caducous.
Racemes with few flowers laxly inserted on a very slender rhachis; bracts 1–3 mm long, subulate or filiform; bracteoles inserted just below calyx, 3–4(6) mm long, linear, ascending and sometimes curved.
Calyx 8–10 mm long, sparsely puberulous; lobes narrowly attenuate-triangular, more than twice as long as the tube.
Seeds 4–5 mm long, oblique-cordiform, slightly rugulose, dark brown, sometimes mottled greenish-brown.
Bushy shrub or subshrub 1–3 m tall, with slender pubescent branches, often glabrescent.
Pod (2)3–4 cm long, oblong-clavate, shortly stipitate, thinly spreading pubescent.