百色楼梯草 bai se lou ti cao

Subshrubs dioecious, 40-50 cm tall. Stems erect, branched, ferruginous-furfuraceous, glabrous. Leaves alternate, glabrous; nanophylls absent; stipules subulate or narrowly linear, 2-6 × 0.2-0.5 mm, without cystoliths; petiole 2-4 mm; leaf blade obliquely elliptic, 3.5-10 × 1.5-4 cm, papery, major basal lateral veins asymmetric, 1 basal, the other arising above base, cystoliths conspicuous, dense; base with broader half auriculate, margin denticulate, apex acuminate. Male inflorescences solitary, simple, 4-6 mm in diam.; peduncle 5-10 mm; receptacle 1-1.5 mm in diam.; bracts connate, 3-4 mm; bracteoles ovate or cymbiform-linear. Male flowers 5-merous. Fl. Jun.

* Evergreen forests; ca. 300 m. Guangxi (Bose).