那坡楼梯草 na po lou ti cao

Herbs perennial, monoecious, ca. 45 cm tall, glabrous. Stems ascending or erect, simple, glabrous or pilose, not furfuraceous. Leaves alternate; nanophylls ovate, 0.8-1.2 mm; stipules linear-lanceolate, ca. 7 × 1-2 mm; petiole 1-2 mm; leaf blade obliquely elliptic or oblong, 10.5-15.5 × 4-6 cm, herbaceous, major basal lateral veins asymmetric, 1 basal, the other arising above base, cystoliths conspicuous or obscure, sparse; base with broader half auriculate, margin crenate or denticulate, apex short caudate. Male inflorescences solitary, simple, ca. 15 mm in diam.; peduncle 50-60 mm; receptacle ca. 14 mm in diam.; bracts connate, ca. 2.5 mm; bracteoles linear. Female inflorescences 2 mm in diam., sessile; receptacle ca. 1.8 mm in diam.; bracts cymbiform-triangular; bracteoles narrowly linear. Male flowers 5-merous. Fl. Oct.

* Shaded wet forests on limestone mountains; ca. 1100 m. Guangxi (Napo).