Hedysarum occidentale Greene × Hedysarum sulphurescens Rydb.

Montana: Powell County: On top of Shale Mountain; 5 miles northeast of Big Prairie Ranger Station; Flathead National Forest.
46.713779° N, 114.788463° W,
Datum: WGS 84. Uncertainty: 800 meters. Coordinate Source: Digital Map. Invalid coordinates (located outside county bounds).
Agrillite-rock. Growing with both supposed parents, intermediate in color, lobes of wing petals like sulphurescens, but corolla like that of occidentale. Phenology: Flowers.

C. L. Hitchcock 18603A, Jul 21, 1948
WTU, Accession: 126437