Sichuan: Maerkang (Barkam) Xian.
N of the city of Maerkang on road to Dazang Xiang (and Dazang Si) at Xinggu Yakou (Xinggu Pass).
Rocky slopes and gravelly areas on N side of pass; mostly alpine herbs with scattered colonies of evergreen Rhododendron (less than 1 m tall).
32°2'45"N,
102°18'59"E;
4260-4400 m.
Rocky slope.From a deep taproot; roots yellow when cut; petals creamy white, with two glands at base, glands blackish; anthers blackish purple; ovary blackish.
David E. Boufford, Kazumi FUJIKAWA, Susan L. Kelley, Richard H. Ree, Bo XU, Dacai ZHANG, Jian-Wen ZHANG, Ti-Cao ZHANG & Wei-Dong ZHU