Xizang (Tibet): Jiangda (Gyamda) Xian.
Along W side of Jinsha Jiang and S of route 317 (highway between Dêgê, Sichuan, and Jiangda, Xizang.
Slope with scattered Juniperus (remnant Juniperus forest) and river bank dominated by Berberis, Rosa and Lonicera.
31°35'30"N,
98°37'11"E;
3040-3090 m.
Under trees of Juniperus in moss and in bare soil.Petals yellow with dark lines, lower surface of petals dark reddish. [Synonym = Medicago archiducis-nicolai Širjaev].
David E. Boufford, Bruce Bartholomew, Deren A. Eaton, Xin-Hui LI, Richard H. Ree, Bo XU, Ji-Pei YUE, Jian-Wen ZHANG & Xin-Xin ZHU