Climbers glabrous except for rachis, dioecious. Stems ± gray when dry, ca. 2 mm thick, ridged. Petiole 1-1.2 cm; prophyll to as long as petiole; leaf blade oblong to ovate-lanceolate, 10.5-13(-16) × 3-5 cm, papery, finely glandular, slightly bullate when old, abaxially pale gray, base obtuse to tapered, ± symmetric to slightly oblique, bilateral difference 0-2 mm, apex acuminate and mucronate; veins pinnate, 3 per side, alternate, slender, apical pair arising 4-5.5 cm above base; reticulate veins prominent. Spikes leaf-opposed. Male spikes 8-9 cm × ca. 2 mm; peduncle 2.5-3 cm; bracts oblong, ca. 1.2 × 0.5 mm, adnate to rachis, margin and apex free. Stamens 3, exserted; filaments longer and thicker than anthers; anthers ovoid. Female spikes to 15 cm in fruit; rachis and bracts as in male spikes. Drupe subglobose, ca. 3 mm in diam. (not fully mature), sessile. Fl. Mar.
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