Herbs perennial, dioecious, ca. 28 cm tall. Stems ascending or erect, simple, ferruginous-furfuraceous or sparsely pubescent. Leaves alternate; nanophylls absent; stipules linear, 1-1.2 × 0.3 cm, puberulent on abaxial surface along costa; petiole absent; leaf blade obliquely elliptic, ca. 13 × 4.5 cm, herbaceous, major basal lateral veins both arising at base of leaf blade, both surfaces glabrous; cystoliths conspicuous, dense; base with broader half nearly auriculate, margin dentate, apex caudate-acuminate. Male inflorescences solitary, simple, 4-7 mm in diam.; peduncle 8-15 mm; receptacle obscure; bracts connate, 5-7 mm; bracteoles broadly linear. Male flowers 4-merous. Fl. Jun.

* Dark damp places in forests; 1600-1700 m. SE Yunnan.