Vines climbing. Stem branched, to 3 m, woody, smooth or slightly scabrous, sometimes sparsely prickly. Petiole 1.5--2.5 cm, glabrous or minutely setose, narrowly winged for 1/4--1/3 its length; wings ciliate or minutely fimbriate at margin; abscission zone at middle or distal; tendrils well developed. Leaf blade ovate-lanceolate to elliptic-lanceolate, 8--18 × 3.5--5.5 cm, papery, base rounded or cuneate, apex acuminate. Male inflorescence of 1 umbel, basally prophyllate; peduncle much longer than petiole, proximally articulate; umbels of both sexes many flowered. Male flowers (var. setulosa): tepals yellowish green, outer ones ca. 8 × 1.2 mm, inner ones ca. 8 × 0.6 mm. Berries globose, ca. 1.2 cm in diam. Fl. Aug, fr. Oct--Nov.

* Forests; 300--400 m. SW Guangdong, S Guangxi.