短梗楼梯草 duan geng lou ti cao

Herbs perennial, dioecious, 10-25 cm tall, glabrous. Stems ascending, branched. Leaves alternate; nanophylls absent; stipules narrowly linear, 3-5 × 0.6-1 mm, without cystoliths; petiole 0-1 mm; leaf blade oblong-elliptic, 7-13 × 1-3.2 cm, herbaceous, major basal lateral veins asymmetric, 1 basal, the other arising above base, cystoliths absent; base with broader half obtuse, margin dentate, apex acuminate or cuspidate. Male inflorescences ca. 5-clustered, many branched, 2.5-5 mm in diam.; peduncle 1-1.5 mm; receptacle absent; bracts alternate, narrowly oblong or triangular, 0.8-1.2 mm. Male flowers 5-merous. Fl. May.

* Evergreen broad-leaved forests on mountain slopes; ca. 2600 m. W Yunnan.