Usually monoecious but sometimes paradioecious. Leaves (1-)2, pedate; leaflets 11-13, linear to lanceolate, 9-19 x 0.6-1.7 (-2.5) cm. Spathe longer than the foliage, green, ribbed; tube 5.4-5 cm long, cylindrical, gradually broadening into an ovate, caudate-acuminate limb, larger than the tube. Spadix appendage 8-19 cm long , stout, at first curved and then prolonged upright beyond the limb, black when dry. In monoecious forms the male zone longer than the female. Stamens stalked; anther dehiscence porose. Ovary ovoid, c. 1.5 mm long; style short, stigma discoid, papillate. Berry 6-7 mm broad. Seeds 4-5, ± angular-ovoid, testa rugose, coriaceous, yellowish-brown.