Climbers dioecious. Stems pale yellow when dry, ridged, pubescent when young. Petiole 1.2-1.5 cm, pubescent, sheathed at base only; leaf blade ovate to ovate-oblong or elliptic, 7-13 × 3-7 cm, papery, densely glandular, abaxially densely hispidulous, adaxially glabrous, base rounded, ± symmetric, apex acute to slightly acuminate; veins 5-7, apical pair arising ca. 2 cm above base, others basal; reticulate veins conspicuous Spikes leaf-opposed. Male spikes 5-7 cm × ca. 2.5 mm at anthesis; peduncle to 2.2 cm, glabrous to rather densely hispidulous; bracts orbicular, ca. 1 mm wide, peltate, stalked. Stamens 3; filaments slightly longer than anthers; anthers ovoid. Female spikes 6-8(-10) cm × ca. 3 mm at anthesis, 5-9 cm in fruit peduncle to 2.9 cm, usually thicker upward, densely hispid; rachis densely puberulent; bracts ovate, stalk short, ca. 1.5 × 1 mm. Ovary immersed in and connate to rachis; stigmas 4 or 5, linear, deciduous. Drupe subglobose to broadly ovoid, 3-4 mm in diam. Fl. May-Jul.
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