Tuber oblate or ovoid. Stem sometimes slightly thickened at nodes. Leaves pedately 7-9-foliolate; petiole 3-7 cm, sparsely puberulent or subglabrous; leaflets obovate-lanceolate to elliptic-lanceolate; median leaflets 6-10 × 2.5-4 cm; petiolule 2-6 mm. Inflorescence dichotomously cymose, 4-12 cm; peduncle and branches slightly flexuous. Male flowers: bud obtuse at apex; calyx segments spreading, ovate-lanceolate, 4-5 × 2-3 mm; corolla green to pale yellow-green, rotate, 7-15 mm in diam.; segments strap-shaped, 6-7 × 2-3 mm, fleshy, base with a pair of glands; filaments less than 1 mm. Female flowers: calyx and corolla as in male flowers; ovary conical, 5-7 × 3-4 mm. Fruit campanulate to conical, (3-)4-7 × 3-4 cm, with distinct ribs; fruiting pedicel 8-10 mm. Seeds dark brown, irregularly orbicular, 12-15 × 8-12 mm, 3-4 mm thick, with very narrow wing. Fl. Jul-Sep, fr. Sep-Nov. 2n = 28.

Evergreen forests, thickets on mountain slopes; 1000-2300 m. NW and SW Yunnan [NE India].