Physocarpus monogynus (Torr.) Coult.
Annotated by Peter Lesica, 16 Jun 1985.

Montana: Carbon County: South Fork Grove Creek, Beartooth Mountains; ca 6 mi southeast of Red Lodge. Elev. 6200 ft.
45.087° N, 109.2238° W; T8S R20E S35
Coordinate Source: TRS-website.
Common in Douglas fir-limber pine forest in rocky soil on a steep east-facing slope of the limestone scarp south of the South Fork Grove Creek. With Juniperus scopulorum and J. communis. Phenology: Flowers.

Peter Lesica 3409, Jun 16, 1985
MONTU, Accession: 102328