Habit : A climber with tubers large, globose or elongate and stem terete, unarmed, glabrous, bulbiferous in the leaf-axils, the bulbils warted.
Leaves : Opposite and alternate, variable in size, membranous, dark-green, broadly ovate, acuminate, cuspidate or caudate, base cordate with a broad, deep or shallow sinus, nerves 7-8.
Flowers :
Male flowers variable in size, greenish or purplish, in short slender (almost capillary), spikes close together or scattered on the branches of crowded axillary slender pendulous glabrous spikes or panicles.