Tuber oblate-spheroid. Stem and branchlets rather robust, thickened at nodes, densely pubescent. Tendrils 7-16 cm. Leaves pedately 7-9-foliolate; petiole 5-8 cm; leaflets obovate-lanceolate, margin dentate; median leaflets 8-12 × 3-4 cm; petiolule 4-8 mm. Male flowers dichotomously cymose or paniculate; peduncle indistinctly flexuous, 3-7 cm; calyx segments ovate-lanceolate, ca. 7 × 4 mm, apex reflexed; corolla pale yellow-green, bowl-shaped, 8-10 mm. Female inflorescence simple; peduncle 2.5-5 cm; corolla larger than male, 11-12 mm in diam.; ovary ellipsoid, ca. 10 cm × 6-7 mm. Fruit ellipsoid to ovoid, 4-5 × 2.5-3 cm; fruiting pedicel 9-12 mm. Seeds obovate-elliptic to almost circular, compressed, 13-16 × 12-14 mm, 3-4 mm thick, almost unwinged, margin ca. 4 mm wide. Fl. Jun-Oct, fr. Aug-Nov. 2n = 42*.

● Forests; 1800-1900 m. SE Yunnan.