Climbers to several m long, dioecious. Stems rooting at nodes, densely roughly rusty brown pubescent when young, sparsely pubescent when old, hairs usually curved toward stem apex. Petiole 0.5-2.5 cm, longest on stoloniferous branches, roughly pubescent, sheathed at base; leaf blade ovate or ovate-oblong, 3.5-5 × 2-3 cm, membranous, finely glandular, abaxially sparsely pilose on veins, adaxially sparsely pilose mostly between veins, with curved hairs, base cordate, slightly oblique, apex acute or obtuse; veins 5-7, apical pair arising 1-2 cm above base, others ± basal; reticulate veins conspicuous; leaf blades toward apex of stem long elliptic, oblong, or ovate-lanceolate, 7-11 × 3-4.5 cm, base oblique or semicordate, apex shortly acuminate. Spikes leaf-opposed. Male spikes 5.5-13 cm × 2-3 mm; peduncle ca. as long as or slightly longer than petioles of leaves toward apex of stem; bracts orbicular, 0.7-1 mm wide, peltate, abaxially glabrous, fascicled pubescent at insertion to rachis, stalk short. Stamens 2; filaments short; anthers subglobose. Female spikes 4-5.5 cm; bracts as in male spikes. Ovary subglobose, distinct; stigmas 4, linear. Drupe obovoid, distinct, ca. 2 mm in diam. Fl. Mar-Jul.
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