角托楼梯草 jiao tuo lou ti cao

Herbs perennial, dioecious, 20-40 cm tall. Stems ascending or erect, branched, hirtellous. Leaves alternate; nanophylls absent; stipules linear-lanceolate, 5-7.5 × 1.5-2 mm, glabrous; petiole 0-2 mm; leaf blade obliquely elliptic, 6.5-8 × 3-4 cm, herbaceous or nearly papery, major basal lateral veins asymmetric, 1 basal, the other arising above base, abaxial surface sparsely puberulent along veins, adaxial surface sparsely hirtellous, cystoliths obscure, sparse; base with broader half auriculate, margin dentate, apex short acuminate. Male inflorescences solitary, simple, ca. 11 × 8 mm in diam.; peduncle ca. 45 mm; receptacle oblong, ca. 10 × 7 mm; bracteoles cymbiform-elliptic or obovate. Male flowers 5-merous. Fl. Jun.

* Valley streamsides; ca. 900 m. S Sichuan.