Vines climbing. Stem and branches pubescent, rarely eventually glabrescent. Petiole 0.5--2.5 cm, pubescent, narrowly winged for ca. 1/3 its length; tendrils well developed. Leaf blade oblong to lanceolate-ovate, 3.5--16 × 1--6 cm. Inflorescence borne in axil of leaf or scalelike bract; peduncle 0.5--3 cm, puberulent; umbels of both sexes 10--30-flowered, base 2--3 mm in diam.; pedicels 3--10 mm. Male flowers: perianth oblong-ellipsoid, 5--6 × 1.5--2 mm, tapering to both ends, teeth ca. 1 mm; stamens 3; filaments ca. 2 mm, connate for ca. 1/2 their length; anthers ca. 1 mm. Female flowers: perianth red-brown, ovoid, 2.5--3.8 × ca. 2 mm, narrowed to orifice; stigmas reaching base of perianth teeth; staminodes 3, filiform, ca. 1 mm. Berries subglobose, 7--10 mm in diam. Fl. May--Jun, fr. Sep--Dec.

* Dense forests, thickets along valleys; 300--2100 m. Guangdong, Guangxi, Sichuan, Yunnan.