Perennial, evergreen herbs, climbing,
arborescent or plant rosulate and acaulescent. Leaves numerous, leaf-blade
variable, petiole warty or covered with scale-like processes. Inflorescence
1-11 in each floral sympodium, peduncle shorter than petiole. Spathe thick and
fleshy, persistent, blade usually boat-shaped. Spadix sessile or
short-stipitate, female zone free, rarely adnate basally. Flowers unisexual,
perigone absent. Male flowers : 2-6 androus, anthers sessile to subsessile.
Staminodes usually prismatic. Ovary 2-4 to several loculed, ovules 1-50 or more
per locule. Fruit berry, sub-cylindric to obovoid. Seeds 1-many, white.