对叶楼梯草Elatostema sinense H. Schroter

别名：中华楼梯草;冷草;

科名：荨麻科 Urticaceae

属名：楼梯草属 Elatostema

《中国植物志》第23(2)卷230页
  26.对叶楼梯草（东北林学院植物研究室汇刊）冷草（湖北）图版47: 3
  Elatostema sinense H. Schreter in Repert. Spec. Nov. Regni Veg. Beih. 83 (2): 152. 1936; W. T. Wang in Bull. Bot. Lab. N.-E. For. Inst. 7: 37. 1980; 云南种子植物名录，上册，724. 1984; 贵州植物志4: 51. 1989.

《Flora of China》 Vol. 5 (2003)
Elatostema sinense  H. Schroeter
对叶楼梯草   dui ye lou ti cao
Herbs perennial, dioecious, 20-60 cm tall. Stems ascending or erect, simple or rarely branched, crispately pubescent. Leaves alternate; nanophylls ovate to elliptic, 3-5 mm; stipules lanceolate, 4-6 × 0.8-1 mm, glabrous or ciliate, with cystoliths; petiole 1-3 mm; leaf blade obliquely elliptic or oblong, 3.5-9.9 × 1.5-3 cm, herbaceous, major basal lateral veins asymmetric, 1 basal, the other arising above base, abaxial surface sparsely puberulent, adaxial surface sparsely strigillose, cystoliths conspicuous, dense; base with broader half broadly cuneate or rounded, margin dentate, apex acuminate or caudate-acuminate. Male inflorescences solitary or in pairs, simple, 2-8 mm in diam.; peduncle 1-2.5 mm; receptacle very small or absent; bracts connate, 2-2.5 mm; bracteoles oblong or linear. Female inflorescences solitary or in pairs, 4-6 mm in diam.; receptacle small; bracts triangular; bracteoles spatulate-linear. Male flowers 5-merous. Achenes ovoid, 5-ribbed. Fl. Feb-Nov.
* Forests, dark damp places in valleys or at streamsides; 400-2800 m. S Anhui, Fujian, Guangxi, Guizhou, W Hubei, Hunan, Jiangxi, Sichuan, N Yunnan.