Qinghai: Nangqen Xian.
Yushu Zangzu Zizhizhou; ca. 15-20 km E of the town of Nangqen along the Za-Qu (Za River) in Shixia Gou.
West facing ravine over limestone with sparse Juniperus (Sabina) on slopes and shrub vegetation on level areas along stream.
31°53'37"N,
96°35'46"E;
4100-4200 m.
Shrub, ca. 1.5 m tall; mature stems brown; leaves abaxially pale green, adaxially mid green; fruit green, turning red; seeds 2-5. Berberis dictyophylla var. epruinosa is treated as a synonym of B. ambrozyana C. K. Schneider by Harber; see Monogr. Syst. Bot. Missouri Bot. Gard. 136. 130. 2020.
David E. Boufford, Bruce Bartholomew, Jian-Ling GUO, Julian F. Harber, Qin LI & Ji-Pei YUE