Robust, climbing shrubs, stems
branched, rooting at nodes. Leaves entire, ovate, oblong-lanceolate, acuminate,
pinnately nerved, petiole sheathing, geniculate, sheath usually broad.
Inflorescence solitary. Peduncle shorter than petiole. Spathe cymbiform,
caducous to deciduous. Spadix sessile, shorter than spathe, dense-flowered.
Flowers bisexual, naked, perigone absent. Stamens 4, filaments widish,
flattened, thickened at tips, anther-cells oblong, dehiscence by lateral slits.
Ovary prismatic or obpyramidal, 1-locular, ovule solitary, anatropous,
placentaion basal, stylar region well-developed, stigma sessile, disciform to
linear. Fruits obpyramidal berries. Seeds subreniform.