Soft-wooded tree, 6-10 m tall. Leaf c. 13-30 cm long; leaflets 30-60, c. 1.8-3 cm long, 5-10 mm broad, oblong, obtuse, glabrous; stipules minute, deciduous.

Inflorescence an axillary raceme, 2-4-flowered. Calyx c. 2.5 cm long, glabrous, somewhat 2-lipped. Corolla white or red. Vexillum c. 7-10 cm. Fruit c. 30-50 cm long, c. 8 mm wide, 25-35-seeded, suture much thickened.