潞西楼梯草 lu xi lou ti cao

Subshrubs dioecious, ca. 25 cm tall, glabrous. Stems erect, branched. Leaves alternate; nanophylls absent; stipules subulate, 5-7 × 0.1-0.2 mm, without cystoliths; petiole absent; leaf blade obliquely oblong, 9-12.5 × 2.5-3.5 cm, herbaceous, major basal lateral veins asymmetric, 1 basal, the other arising above base, cystoliths conspicuous, sparse; base with broader half auriculate, margin denticulate, apex caudate-acuminate. Male inflorescences solitary, simple, 4-10 mm in diam.; peduncle ca. 15 mm; receptacle 3-9 mm in diam.; bracts connate, 1-2.5 mm; bracteoles lanceolate. Fl. Feb.

* Valleys; 1700-1800 m. W Yunnan.