青叶苎麻 qing ye zhu ma

Boehmeria tenacissima Gaudichaud-Beaupré, Voy. Uranie, Bot. 500. 1830; B. frutescens var. concolor (Makino) Nakai; B. nipononivea Koidzumi; B. nivea var. candicans Weddell; B. nivea var. concolor Makino; B. nivea var. nipononivea (Koidzumi) W. T. Wang; B. nivea var. viridula Yamamoto; B. thailandica Yahara.

Plants 0.5-2.5 m tall; stems and petioles sparsely appressed strigose, occasionally hairs dense and assurgent. Stipules connate at base or rarely to middle; leaf blade usually ovate or elliptic-ovate, 5-13 × 3.5-12 cm, abaxial surface greenish, sparsely appressed strigillose or patent pubescent, sometimes thinly canescent-tomentose on veinlets, base rounded, broadly cuneate or abruptly narrowly cuneate.

Forest margins, thickets, moist places along streams, occasionally cultivated; 200-1200 m. S Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hainan, Hubei, Hunan, Jiangxi, Sichuan, Taiwan, SE Yunnan, Zhejiang [Indonesia, Japan, Korea, Laos, Thailand, Vietnam].

This variety is cultivated in Anhui, Guangdong, Jiangxi, Taiwan, and Zhejiang. It is perhaps the original wild form of the species.