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)
Under Rhododendron in moss and in meadow.Corolla white; anthers yellow.
D. E. Boufford, K. Fujikawa, S. L. Kelley, R. H. Ree, B. Xu, J. W. Zhang, T. C. Zhang, W. D. Zhu