毛梗楼梯草 mao geng lou ti cao

Herbs perennial, monoecious, 10-16 cm tall. Stems ascending or erect, branched, sparsely pubescent. Leaves alternate; nanophylls absent; stipules linear-lanceolate, ca. 6 × 1.5 mm; petiole absent; leaf blade obliquely elliptic, 3-7.5 × 1.5-3 cm, herbaceous, major basal lateral veins both arising at base of leaf blade, abaxial surface densely puberulent along nerves, adaxial surface sparsely strigillose, cystoliths conspicuous or obscure, dense; base with broader half nearly auriculate, margin dentate, apex cuspidate or short acuminate. Male inflorescences solitary, simple, ca. 6 × 3 mm; peduncle 10-30 mm; receptacle elliptic, ca. 4 × 2.5 mm; bracts connate, ca. 0.5 mm; bracteoles linear. Female inflorescences solitary, ca. 3 mm in diam., sessile; receptacle small; bracts shorter than 0.5 mm; bracteoles linear. Male flowers 4-merous. Fl. May.

* Montane bamboo forests; ca. 2300 m. SE Yunnan.