An undershrub up to 2 m tall, sometimes an annual. Leaves stipulate, stipules 4-6.5 mm, acuminate, caducous. Leaves 12-20 cm long, a solitary stalked gland present near the base of the petiole, leaflets 3-5 pairs, opposite, petiolule c. 1 mm, lamina 2.5-9 cm long, 1.2-3.3 cm wide, lanceolate or ovate-lanceolate or narrowly to broadly elliptic, apex acute, rounded at the base, glabrous on both the sides, pilose when young. Inflorescence pedunculate, axillary, corymbose raceme forming terminal panicles, peduncle 0.3-0.8 mm, enlarging in infructescence. Flowers yellow, 1.2 cm across, pedicel c. 5-10 mm long, bracteate, bracts .7-1 cm long, ovate, oblique, acuminate, glabrous, caducous, white, tinged with pink. Calyx c. 1 cm long, divided up to base, glabrous, oblong, obtuse, white, tinged with pink. Corolla 1.2 cm long, oblong-obovate, more or less unequal, obtuse, orange veined. Stamens 10, 3 lower longer than 4 lateral stamens, 3 staminodes. Pods 9-12.5 cm long, 7-8 mm wide, slightly falcate, compressed, with transverse septation, sutures thick. Seeds 20-30, ovoid, compressed, 6-6.5 mm long, 5 mm broad, rounded at the tip, subacute at the base, smooth, hard, shining, pale-brown.