Distribution : China (Gansu, Guangxi, Guizhou, Henan, Hubei, Ningxia, Shaanxi, Shanxi, Sichuan, Yunnan)
Picture 3 in China, Sichuan, Kangding, 2600m, September 2005
Picture 4 in China, Sichuan, Gongga shan, September 2005
Pictures 7, 8, 9 & 10 in China, Sichuan, near Wolong, June 2002
Pictures 11, 12 & 13 in China, Sichuan, Mt.Emei, June 2002
Highly variable species
Publication in Trudy Imp. S.-Peterburgsk. Bot. Sada 11: 38 (1890)