perennial herbs, rhizomes stout or absent, stem creeping, erect or ascending.
Leaves entire, very variable in shape, petiole long, sheathing up to halfway.
Spathe usually erect, persistent round fruit. Spadix shorter or subequal to
spathe, stipitate or sessile, staminate and pistillate flowers close together.
Male flowers : stamens distinct, densely grouped, anthers opening by pores or
slits. Female flowers : ovaries ovoid or
globose, perfectly or imperfectly 2-4-celled, stigma sessile, ovules many, hemianatropous. Fruit berry, few
or many-seeded. Seeds small, ovoid.