Sichuan: Rangtang (Zamtang) Xian.
NW of the city of Rangtang (Zamtang) on road toward Sêrtar Xian along the Du-ke He ( Du-ke River).
Meadows and shrub thickets along small stream flowing into the Du-ke He; thickets on slopes and open areas around outcropping ledges
Stream bank in wet soil and in meadow at base of slope.Corolla pinkish purple.
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