石生楼梯草 shi sheng lou ti cao

Procris rupestris Buchanan-Hamilton ex D. Don, Prodr. Fl. Nepal. 60. 1825.

Herbs perennial, dioecious, 45-60 cm tall. Stems ascending or erect, simple, densely strigose. Leaves alternate; nanophylls absent; stipules lanceolate, 10-15 × 3-5 mm, sparsely strigillose, with cystoliths; petiole 1.5-5.5 mm; leaf blade obliquely elliptic or obovate-elliptic, 11-16 × 3.5-5.5 cm, herbaceous, major basal lateral veins asymmetric, 1 basal, the other arising above base, abaxial surface sparsely strigillose along nerves, adaxial surface sparsely hirtellous, cystoliths conspicuous, dense; base with broader half obtuse, margin dentate, apex acuminate. Female inflorescences solitary, 6-11 mm in diam.; peduncle ca. 1 mm; receptacle nearly quadrate, 5-9 mm; bracts triangular; bracteoles spatulate or linear. Achenes ovoid, 8-ribbed. Fl. May.

Valley forests; ca. 1500 m. S Yunnan [NE India, Nepal].