Vines climbing. Stem branched, woody; branches densely verruculose. Petiole 1--2 cm, wingless; abscission zone between middle and distal part; tendrils absent. Leaf blade ovate, 7.5--15.5 × 4--8 cm, leathery, base subtruncate or broadly cuneate, apex acuminate. Male inflorescence of 1 umbel, basally prophyllate; peduncle 3--5 cm, proximally articulate; umbel densely many flowered, base thickened, oblong-ellipsoid, 4--5 × 1.5--2 mm. Male flowers: tepals yellowish green, outer ones oblong, 2--2.5 × ca. 0.8 mm, inner ones ca. 2 × 0.4 mm; stamens ca. 1/2 as long as tepals; anthers oblong, ca. 0.5 mm. Female flowers and fruit unknown. Fl. May.

* Forests; ca. 600 m. SE Yunnan (Funing Xian).