coarse perennial herbs, rootstock tuberous or forming short, stout caudex.
Leaves stoutly petioled, lamina ovate-cordate, peltate. Inflorescence spadix,
shorter than spathe, male and female inflorescences with usually interposed
flat neuters, spathe stoutly peduncled,
spathe-tube thick, accrescent, persistent, mouth constricted. Flowers monoecious.
Stamens 3-8, connate in obpyramidal column, anthers linear-oblong. Ovary ovoid
or oblong, 1-locular or partially 3-4 locular above, ovules few, orthrotropous,
style short or absent, stigma cushion-like, 3-6 lobed. Fruit a berry, obconic
or oblong. Seeds oblong, sulcate.