Tuber enlarged, yellow-brown. Stem and branchlets slender. Leaves pedately 5-7-foliolate; petiole 3.5-6.5 cm; leaflets obovate-lanceolate or elliptic-lanceolate, margin crenate; median leaflets 7-15 × 4-7 cm. Male inflorescence dichotomously cymose; rachis 3-8 cm; calyx segments lanceolate, 6-8 × 4-6 mm, apex apiculate, flexuous; filaments ca. 1 mm. Female inflorescence simple; ovary cylindric, ca. 6 × 3 mm. Fruit elliptic, 5-8 × 2-3.5 cm. Seeds broadly ovate to suborbicular, compressed, 13-14 × ca. 11 mm, 2-3 mm thick, unwinged; margin ca. 1 mm wide, erose. Fl. Jun-Sep, fr. Aug-Nov.

● Broad-leaved forests; 1400-1800 m. C and SW Sichuan.