翅苞楼梯草 chi bao lou ti cao

Herbs perennial, monoecious, 10-25 cm. Stems prostrate, branched, strigose. Leaves alternate; nanophylls absent; stipules lanceolate to linear, 5-7 × 1.8-2.5 mm, strigillose, with cystoliths; petiole 0-1 mm; leaf blade obliquely elliptic, 1-4.5 × 0.6-2.5 cm, herbaceous, major basal lateral veins asymmetric, 1 basal, the other arising above base, abaxial surface puberulent, adaxial surface sparsely strigose, cystoliths conspicuous or obscure, dense; base with broader half auriculate, margin denticulate-serrate, apex acutate. Male inflorescences solitary, simple, 3-10 mm in diam.; peduncle 4-30 mm; receptacle small; bracts connate, ca. 3.5 mm; bracteoles spatulate-linear. Female inflorescences solitary, 30-flowered or more, 1.5-2.5 mm in diam.; peduncle 0-1 mm; receptacle small; bracts triangular; bracteoles linear-oblong. Male flowers 5-merous. Fl. May-Jun.

* Valley forests; 2100-2500 m. SE Xizang, W Yunnan.