China, Yunnan, Zhong Dian, Tian Chi (Sky Lake) ca. 70 km SW of Zhongdian via lengthy dirt road heading W into mountains from Highway 214 (Dali-Zhongdian road); ca. 15 km S of Zhongdian; alpine lake in high elevation valley with numerous seeps surrounded by pastured meadow, dwarf (4 m tall) Rhododendron thickets, and some groves of larger Rhododendron species; surrounding Picea forest ravaged by logging and disease; local on limestone outcrop in small sinkhole