Woody climber. Leaf imparipinnately compound, c. 20-25 cm long. Stipules persistent, c. 7 mm long. Leaflets 7-9, 8-16 cm long, ovate-oblong, apex shortly acuminate, appressly silky on both sides; petiolule c. 4 mm long, stipels c. 1-2 mm long, deciduous. Raceme c. 10-30 cm long. Pedicel c. 3 mm long. Calyx c. 3 mm long, densely hairy, teeth small. Corolla greenish yellow, pubescent; vexillum c. 8-12 mm long. Ovary appressly silky. Fruit up to 15 cm long, 3 cm broad, velvety, becoming somewhat glabrous, about 8-seeded.