Sichuan: Rangtang (Zamtang) Xian.
N of the city of Rangtang (Zamtang) on road to Aba Xian, then E on road to Zhong Rangtang along Maierdi-anma (river), then S along stream ca. half way to Chotuo.
Broad, flat valley with a network of meandering rocky streams and marshy places, adjacent meadow, slopes with shrubs and outcropping ledges
NW-facing slope.Common. Corolla pale yellow, nearly white.
D. E. Boufford, K. Fujikawa, S. L. Kelley, R. H. Ree, B. Xu, D. C. Zhang, J. W. Zhang, T. C. Zhang, W. D. Zhu