Subshrubs dioecious, 30-50 cm tall, glabrous. Stems erect, simple. Leaves alternate; nanophylls absent; stipules broadly lanceolate or narrowly lanceolate, 10-12 × 3-4 mm, with cystoliths; petiole 4-11 mm; leaf blade obliquely oblong, 10.5-18 × 4-7.5 cm, papery, major basal lateral veins absent and venation pinnate, cystoliths conspicuous, dense; base with broader half broadly cuneate or rounded, margin crenate, apex acuminate. Male inflorescences solitary, simple, 15-18 mm in diam.; peduncle ca. 1.5 mm; receptacle obscure; bracts connate, 7-9 mm; bracteoles cymbiform-linear or spatulate-linear. Male flowers 5-merous. Fl. Jun-Sep.

* Valley forests, streamsides; 200-300 m. Yunnan (Hekou).