Tubers mostly large, globose or pyriform. Stems glabrous, twining clockwise bearing numerous brown warted bulbils c. 2.5 cm in diameter. Leaves alternate, 4-5 cm long, 2.5-13.5 cm broad, ovate, more or less deeply cordate at the base, long acuminate, 9-nerved, petiole 2.5-12 cm long. Male spikes slender, drooping, 6.5-10 cm long, clustered in the axils or sometimes panicled; stamens 6, antheriferous. Female spikes simple, fascicled in the leaf axils, 10-25 cm long. Capsule c. 2 cm long, 1 cm broad, oblong. Seeds winged at the base.