伏毛楼梯草 fu mao lou ti cao

Elatostema strigulosum var. semitriplinerve W. T. Wang.

Herbs perennial, monoecious or dioecious, 7-30 cm tall. Stems ascending or erect, usually simple, crispately strigose. Leaves alternate; nanophylls absent; stipules narrowly triangular or subulate, ca. 1.5 × 0.1 mm, glabrous, without cystoliths; petiole 0-0.8 mm; leaf blade obliquely elliptic, 1.5-5.5 × 0.5-2.5 cm, papery, major basal lateral veins both arising at base of leaf blade or 1 arising above base, abaxial surface sparsely puberulent or glabrescent along veins, adaxial surface glabrous or sparsely strigillose, cystoliths conspicuous, dense; base with broader half auriculate, margin denticulate, apex acute or acuminate. Male inflorescences solitary, simple, 2-5 mm in diam.; peduncle 10-35 mm; receptacle very small; bracts connate, 1.5-3 mm; bracteoles narrowly lanceolate. Female inflorescences solitary, 30-flowered or more, 1.8 mm in diam., sessile; receptacle very small; bracts triangular; bracteoles cymbiform-linear. Male flowers 5-merous. Fl. Feb-Sep.

* Mountain thickets, wet places along streamsides; 600-1000 m. NW Guizhou, Sichuan, SE Yunnan.