Tree, 2-30 m tall. Leaf 10.0-28.5 cm long; stipules caducous, 1 mm long. Leaflets 4-16 pairs, oblong to ovate-oblong, c. 2-7.5 cm long, c. 10-26 mm wide, lower surface pilose, upper glabrous to hairy. Flowers in long panicle of corymbs, up to 10 cm long. Pedicel 2.5-3.5 cm long. Sepals 5-6 mm long, elliptic, ovate, hairy at margins. Petals 1-2.0 cm long, ovate, broadly elliptic or orbicular, upper petal clawed. Anthers 10, 3 upper much reduced. Pod strap shaped, 15-30 cm long, 12-16 mm wide, 20-30 seeded.