Tuber enlarged, pale brown-yellow. Branchlets slender, sparsely pubescent when young. Leaves pedately 7-9-foliolate; petiole 4-6 cm; leaflets oblong-lanceolate to ovate-lanceolate; median leaflets 9-14 × 2-4.5 cm. Male flowers dichotomously cymose, peduncle 3-8 cm; calyx segments 5, lanceolate, ca. 4 × 2 mm, apex reflexed; corolla yellow-green, Chinese lanternlike, ca. 8 mm in diam.; segments 5, obovate-lanceolate, ca. 8 × 5 mm; filaments ca. 1 mm. Female inflorescence simple; ovary subglobose, 3-6 mm. Fruit globose, 20-25 mm in diam. Seeds ovoid, ca. 10 × 8 mm, ca. 3 mm thick, unwinged. Fl. Jul-Sep, fr. Sep-Nov. 2n = 28*.
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