Sichuan: Maerkang (Barkam) Xian.
E of the city of Maerkang on road to Li Xian, then S on a dirt road to Maomuchu Cun.
Along stream and adjacent slopes with remnant forests of Picea and Betula with Hippophaë, Rosa, Cotoneaster, and Hypericum
Roadside and in gaps in forest in sun and shade.Plants to 1.5 m tall; petals creamy white; fruit immature, green.
D. E. Boufford, K. Fujikawa, S. L. Kelley, R. H. Ree, B. Xu, J. W. Zhang, T. C. Zhang, W. D. Zhu