Slender herbaceous vines, 1-2 m. Stems and branches slender, striate, glabrous. Petiole usually equal to leaf blade in length; leaf blade conspicuously peltate, triangular-rotund, 3-5(-7) cm, width equal to length or slightly longer, thinly papery, abaxially pinkish green, both surfaces glabrous, base subtruncate, apex obtuse, with a finely mucronate acumen, palmately 9-or 10-veined, slender, together with dense fine reticulation slightly raised abaxially, brown when dry. Inflorescences axillary or on short axillary branches with reduced leaves, compound umbelliform cymes; peduncle 1-3.5 cm or longer; umbellet rays 3-7, 0.3-1.2 cm, slender; pedicel slender, less than 0.5 mm. Male flowers: sepals 6(or 8) in 2 whorls, thin, obovate-cuneate or broadly obovate-cuneate, rarely obovoid-rounded, 1-1.2 × 0.5-0.8(-1) mm; petals 3 or 4, slightly fleshy, subobdeltoid or broadly cuneate, ca. 0.5 mm; synandrium ca. 0.7 mm. Female flowers: sepals and petals 3(or 4), size and shape as in male flowers; carpel glabrous, stigma often 3-lobed, lobes long and pointed. Drupes red, glabrous; endocarp obovate, 4-5 mm, abaxially ornamented with 2 rows of transverse ridges.
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