Herbs perennial, monoecious, 30-40 cm tall. Stems ascending or erect, usually simple, glabrous. Leaves alternate; nanophylls absent; stipules narrowly triangular, 11-18 × 6-8 mm, glabrous, with cystoliths; petiole 0-2 mm; leaf blade obliquely elliptic, 9-13.5 × 4.5-6 cm, papery, major basal lateral veins asymmetric, 1 basal, the other arising above base, abaxial surface puberulent, adaxial surface sparsely strigillose, cystoliths conspicuous, dense; base obliquely cuneate, margin dentate, apex cuspidate. Male inflorescences solitary, simple, 10-15 mm in diam.; peduncle 2-7 mm; receptacle nearly pentagonal, ca. 10 × 15 mm; bracts obscure; bracteoles spatulate-linear. Female inflorescences solitary, oblong, ca. 10 × 7 mm in diam.; peduncle 0.5-1 mm; receptacle oblong, ca. 10 × 7 mm; bracts absent; bracteoles spatulate-linear. Male flowers 4-merous. Achenes ellipsoid, 6-ribbed. Fl. Apr-May.

* Valley forests; 1300-1400 m. SE Xizang.