Hengduan Mountains
It is endemic to South-West China, and mainly occurs in Lushui County, Jinggu Dai and Yi Autonomous County, Shiping County, Kunming, Huidong County, Yajiang County, Xichang, Guizhou, and in Zayü County. A study published in 2003 identified the species being endemic to China, and identified the Hengduan Mountains as the main area of endemism.