短尖楼梯草 duan jian lou ti cao

Herbs perennial, dioecious, 20-45 cm tall. Stems ascending, branched, retrorsely strigose. Leaves alternate; nanophylls absent; stipules lanceolate, ca. 5 × 2 mm; petiole 1-3 mm; leaf blade obliquely elliptic, 8-16 × 5-8.5 cm, papery, major basal lateral veins both arising at base of leaf blade, abaxial surface sparsely puberulent along veins, adaxial surface glabrous, cystoliths conspicuous, dense; base with broader half nearly rounded, margin crenulate, apex short acuminate. Male inflorescences solitary, simple, 13-15 mm in diam.; peduncle 6-8 mm; receptacle elliptic, 12-14 × 8-14 mm; bracts connate, 8-15 mm wide; bracteoles cymbiform-oblong. Male flowers 4-merous. Fl. May.

* Valley forests; 700-800 m. S Yunnan (Jinping).