Thermopsis rhombifolia (Nutt. ex Pursh) Nutt. ex Rich.
Annotated by E. York, 18 Apr 2006.

Montana: Petroleum County: North Great Plains steppe. 87 east out of Lewistown 48 kilometers. In Grass Range, at the 4-way stop turn right, southeast for 2.7 kilometers. Left on Elk Creek Road. in 12.7 kilometers right on Yellow Water Road. Population begins in 19 kilometers. Elev. 1054
46° 51' 26.58" N, 108° 31' 40.5" W
Open plains on downward slope and in coulee bottom. Associated with Artemisia tridentata, A. frigida, Hesperostipa comata, Sarcobatus vermiculatus, Bouteloua gracilis, Opuntia spp., Phlox hoodii, Rosa woodsii, Hesperostip viridula etc. Forb, 22 centimeters. SCD Serial Number: 0265443. Wild voucher. In collaboration with: Bureau of Land Manangement, USA. Location of duplicate vouchers: Smithsonian Institution (US); North Dakota State University (NDA); Montana State University (MONT). Phenology: Flowers.

N. Anderson MT060-05, Jun 27, 2005
With Beebe-Gidice, L: Bureau of Land Management, USA.: Giunta, A.
MONT, Accession: 79734