Tuber oblate-spheroid. Stem and branchlets robust, stem nodes stout, sparsely pubescent. Tendrils 8-15 cm. Leaves pedately 7-9-foliolate; petiole 5-8 cm; leaflets obovate-lanceolate; median leaflets 6-10 × 2-3 cm; petiolule 4-8 mm. Male flowers dichotomously cymose or paniculate; peduncle usually filiform, 3-7 cm; calyx segments ovate-lanceolate, ca. 9 × 4 mm, apex reflexed; corolla pale yellow to yellow-green, umbelliform, 10-12 mm in diam.; segments obovate to ovate-oblong, fleshy, base thickened, apex obtuse; filaments ca. 1 mm. Female flowers: corolla 12-15 mm in diam., ovary subglobose, 5-8 × 4-7 mm. Fruit globose, 25-45 mm in diam., fruiting pedicel 4-8 mm, with articulation. Seeds dark brown, ovoid-spheroid, ca. 15 × 12-13 mm, almost unwinged, margin ca. 3 mm wide. Fl. Aug-Oct, fr. Oct-Dec. 2n = 42*.

● Evergreen broad-leaved forests; 1700-2400 m. SE Yunnan.