Sichuan: Rangtang (Zamtang) Xian.
N of the city of Rangtang (Zamtang) on road into Qinghai Province, then along the Maerqu He (Maerqu River) on Sichuan side of river.
Remnant forest of Abies, Picea, Betula, Salix and Prunus on slopes above river; Salix immediately along river.
32°40'21"N,
101°6'27"E;
3075-3525 m.
On and at base of open stony slope in soil and rotting wood.Petals pink; stigma globose, white.
David E. Boufford, Kazumi FUJIKAWA, Susan L. Kelley, Richard H. Ree, Bo XU, Da-Cai ZHANG, Jian-Wen ZHANG, Ti-Cao ZHANG, Wei-Dong ZHU