Deciduous shrub or small tree to 7 m high; twigs densely clothed in appressed hairs, rounded, remaining green for several years. Lvs glabrous above, clothed in fine appressed hairs below, 3-foliolate; petioles mostly 30-70 mm long; leaflets elliptic, mucronate, (20)-30-60 mm long; terminal leaflet slightly > lateral leaflets; petiolules ± equal, 1-2 mm long. Infl. axillary, racemose, lax and pendulous, many-flowered; pedicels 5-15 mm long; bracteoles subtending calyx linear, 2-5 mm long, deciduous. Calyx densely clothed in appressed hairs, with 2 short lips. Corolla yellow, sometimes with dark markings, 15-20 mm long. Pod with appressed hairs, becoming almost glabrous when mature, oblong and flattened, 2-6-seeded, 40-70 mm long; sutures thickened; seeds black, c. 5 mm long.