Tree-like herbs, rhizomatous and stoloniferous, 2-9
m tall, tufted, pseudostems of tightly
involute leaf-sheaths, base slightly swollen. Leaves simple, spiral, compactly crowned, blade oblong, petiole
long, enlarged into sheath. Inflorescence subterminal, erect, or pendulous
spike, flowers subtended by spathaceous
bracts, in 1-2 rows per bract, female flowers inside proximal bracts, male ones
inside distal bracts. Cmpound tepal tubular, split, 2-toothed, free sepal
inserted within compound tepal. Stamens 5, filaments short, anthers 2-loculed.
Berries elongate, fleshy. Seeds irregularly globose to lenticular.