A large, tree with whorls of horizontal branches. Leaves with 15-20 cm long petiole, palmately compound, 5-9-foliolate, leaflets elliptic-lanceolate, 6-15 cm long, 2-5 cm broad, glabrescent, entire, acute-acuminate. Flowers unisexual and bisexual on the same plant, 2-4 cm across, dull red, yellow or purplish, with offensive smell; pedicel 1.5-2.5 cm long. Calyx campanu late, 5-lobed, lobes lanceolate, patent, acute. Staminal column c. 1 cm long, recurved, hairy at the base, with 10-15 anthers grouped into a head. Carpels 5; ovary globose, densely villous, 5-lobed, 5-loculed, each locule 12-20-ovuled; gynophore 4-6 mm long. Follicles 5, smooth, boat-shaped, short beaked, c. 10 cm long, 7-8 cm broad, 10-15-seeded, red when mature. Seeds hard, smooth, oblong or ovoid-oblong, c. 2.5 cm long, black.