Large shrub or small tree, 1.5-3.5 m tall, branches hairy. Stipules 10-25 mm long, broadly ovate, caudate-acuminate. Leaves 13-30 cm long, rachis produced into a short spur, glands absent or obscure. Leaflets 8-16 pairs, 2-6 cm long, 0.7-2 cm wide, oblong, mucronate, hairy on both the surfaces. Raceme axillary, pedunculate, 12-50 cm long. Bracts 12-15 mm long. Sepals c. 12 mm long, narrowly obovate. Petals 1.5-2.5 cm long, claw 1 mm long. Stamens 10, 2 lower large, fertile, 3 upper staminodial, short and sterile and 5 medium fertile. Fruit stipitate, flat, 7.5-10 cm long, 1.5-2 cm wide, 9-16 seeded, glabrescent.