Vines climbing. Stem branched, terete, 1--2 m, woody, sometimes sparsely prickly. Petiole 1--1.5 cm, narrowly winged for 1/5--1/4 its length; abscission zone at or above middle; tendrils usually present. Leaf blade becoming grayish when dried, lanceolate, 8--12 × 2--4 cm, adaxially wrinkled along 3 concave main veins. Inflorescence usually of 1 umbel, basally prophyllate; peduncle 1.5--2.5 cm, proximally articulate; umbels of both sexes 3--5-flowered, base slightly thickened. Male flowers: tepals lanceolate-oblong, 3.5--4 × 0.7--1 mm. Female flowers: tepals 2.5--3 × 0.6--0.8 mm; staminodes 3(or 4). Berries globose, 5--6 mm in diam., 1-seeded. Seeds oblate-globose, deeply 5- or 6-furrowed. Fl. Nov.

* Open forests; near sea level to 1000 m. Guangxi, Hainan.