Tuber globose, 1.5-2.2 cm in diam. Cataphylls 2 or 3, 9-10 cm, obtuse at apex. Petiole 12-25 cm, proximal 2/3 sheathing into pseudostem; leaf blade palmate or radiate; leaflets 3-6, sessile, oblong, 2-11 × 1-3 cm, base cuneate, apex acuminate, usually caudate. Peduncle shorter or longer than petioles, 10-18 cm. Spathe green, unmarked or with whitish stripes; tube funnelform, 2-6.5 × ca. 1.5 cm, throat obliquely truncate, not auriculate, not recurved; limb triangular-ovate or ovate-lanceolate, 2-7 × 1.5-4 cm, apex acuminate and caudate with filiform tail 3-5 cm. Spadix unisexual; female zone cylindric, ca. 2.2 cm × 5-6 mm; ovary green, ovoid; style short; stigma spherical; male zone cylindric, 1.5-2.5 cm × 2-3 mm; synandria dense, sessile; anthers 2 or 3, dehiscing by lateral slits. Appendix erect, green, cylindric, 2-3.2 cm, 2.3-5 mm in diam. at base, base swollen and stipitate, apex obtuse; stipe 1.5-3 mm. Infructescence cylindric, ca. 5 × 1.5 cm. Berries yellowish red, ovoid, ca. 5 mm in diam. Seeds 1-3, pale brownish or brown, ovoid, reticulate rugose. Fl. May-Jul.

● Coniferous forests, grassy places; 2400-4200 m. E Qinghai, S Shanxi, S Xizang, W Yunnan.