红背山麻杆(原变种) hong bei shan ma gan (yuan bian zhong)

Stipellaria trewioides Bentham, Hooker’s J. Bot. Kew Gard. Misc. 6: 4. 1854; Alchornea coudercii Gagnepain; A. liukiuensis Hayata.

Leaf blade adaxially puberulent along midrib, stipels 2-3.5 mm. Female flowers: sepals 5(or 6), 3-4 mm, 1 with basal gland; ovary tomentulose; styles 12-15 mm, connate for less than 1 mm. Fl. Apr-May, fr. Jun-Aug.

Plains, mountains, slopes, thickets, open scrub, sometimes on limestone hills; below 1000 m. Fujian, Guangdong, Guangxi, Hainan, S Hunan, S Jiangxi [Cambodia, Japan (Ryukyu Islands), Laos, N Thailand, N Vietnam].