李恒楼梯草 li heng lou ti cao

Subshrubs dioecious, 50-100 cm tall. Stems erect, branched, puberulent. Leaves alternate; nanophylls absent; stipules narrowly lanceolate, ca. 4.5 × 1 mm, puberulent, without cystoliths; petiole 1.5-3 mm; leaf blade obliquely elliptic, 7-15.5 × 2-4.5 cm, papery, major basal lateral veins asymmetric, 1 basal, the other arising above base, abaxial surface sparsely strigillose along veins, adaxial surface sparsely strigillose, cystoliths absent or only present along nerves; base obliquely cuneate, margin dentate, apex cuspidate or caudate. Male inflorescences in pairs or 3- or 4-clustered, simple, 3-4 mm in diam.; peduncle 1.5-2.5 mm; receptacle 3-3.5 mm in diam.; bracts connate, ca. 1.1 mm; bracteoles triangular. Female inflorescences solitary, in pairs, or 2- or 3-clustered, 2-4 mm in diam.; peduncle ca. 0.5 mm; receptacle 1.8-3 mm in diam.; bracts broadly ovate; bracteoles cymbiform-linear or obovate. Fl. Mar-Jun.

* Evergreen broad-leaved forests; 1400-1500 m. SE Xizang, NW Yunnan.