隐脉楼梯草 yin mai lou ti cao

Herbs perennial, dioecious, ca. 28 cm tall, glabrous. Stems ascending or erect, branched. Leaves alternate; nanophylls absent; stipules ovate-linear, 4-5 × 2 mm, with cystoliths; petiole absent; leaf blade obliquely rhombic-obovate or rhombic-oblong, 2.5-5 × 1.2-2 cm, herbaceous or membranous, major basal lateral veins absent and venation pinnate, cystoliths conspicuous, dense; base obliquely cuneate, margin denticulate or crenate, apex obtuse. Male inflorescences solitary, simple, ca. 5 mm in diam.; peduncle 4-6.5 mm; receptacle obscure; bracts connate, ca. 3 mm; bracteoles narrowly ovate or linear. Male flowers 5-merous. Fl. Jul.

* Shaded wet areas along rocks in mountains. Guangxi (Fengshan).