Herbaceous and twining vines, glabrous. Roots tuberous, shortly clavate or fusiform. Branches brown, longitudinally striate. Petiole often very long, 7-10(-14) cm; leaf blade peltate, insertion 1-2 cm from margin, triangular or triangular-rotund, length and width 5-10(-13) cm, papery, base slightly emarginate or repand cordate, rarely subtruncate, margin entire, occasionally irregularly repand, apex obtuse, ?cuspidate, palmately 9-or 10-veined, reticulation thin and dense, becoming brown when dry. Male inflorescences axillary or on short axillary branches with reduced leaves; peduncle 2-5 cm, slightly fleshy, apex bracteolate; umbellet pedicel slender, 1-3 cm; cymelets with pedicels 5-8-fascicled at end of umbelliform pedicel. Male flowers: sepals 6 in 2 whorls, light green, free, broadly ovate or broadly rotund, ca. 1.2 mm; petals 3, broadly cuneate or conchiform, ca. 0.5 × 0.7-0.9 mm, with 2 large cushion-shaped glands inside; synandrium slightly longer than petals. Female inflorescences axillary and similar to male but umbellet pedicel relatively stout, less than 1 cm. Female flowers: sepal often 1, broadly ovate, ca. 1 mm; petals usually 2, rotund, ca. 0.5 mm in diam. Fruiting pedicel fleshy. Drupes red; endocarp rotund, ca. 6 mm in diam. Fl. Jun.
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