Herbs perennial, monoecious, 25-32 cm tall. Stems ascending, branched, crispately pubescent. Leaves alternate; nanophylls absent; stipules narrowly triangular or triangular-linear, 5-9 × 2 mm, glabrous, with cystoliths; petiole 0-3.5 mm; leaf blade obliquely elliptic, 4-10 × 2.5-4.5 cm, papery, major basal lateral veins asymmetric, 1 basal, the other arising above base, abaxial surface crispately strigillose along nerves, adaxial surface glabrous, cystoliths conspicuous, dense; base with broader half obtuse, margin crenate, apex obtuse or short acuminate. Male inflorescences solitary, simple, 13-14 mm in diam.; peduncle 50-70 mm; receptacle elliptic, ca. 10 × 5 mm; bracts connate, 2-3 mm; bracteoles cymbiform-linear. Female inflorescences solitary, 3-8 mm in diam.; peduncle 1-8 mm; receptacle broadly linear, ca. 3.5 × 1 mm; bracts triangular; bracteoles linear or oblanceolate-linear. Male flowers 5-merous. Fl. Aug.

* Rain forests in valleys; 300-400 m. W Yunnan.