The following Participating Institutions are custodians for this species in the CPC National Collection:
CPC National Office
The conservation of Astragalus barrii is fully sponsored.
Jim Locklear contributed to this Plant Profile.
Springtime is fleeting in the Powder River country of eastern Wyoming and Montana, but at its peak it turns the tops of bluffs and buttes into rock gardens of remarkable beauty. An assortment of low-growing plants grace these windswept places, including Barr's milkvetch, a cushion-forming plant with silvery foliage and rose-purple blossoms that is limited to this region of the Great Plains.
Distribution & Occurrence
- South Dakota
Buttes, hilltops, badlands, and gullied knolls and draws, in shallow rocky soils derived from limestone, calcareous sandstone, shale or siltstone. Occurs in cushion plant communities within more densely vegetated mixed grass prairie. Elevation 2940-4000 ft.
| Montana: 33 occurrences (Fertig 2000).
Nebraska: 1 occurrence (Weedon 2001).
South Dakota: 7 occurrences (Ode 1988).
Wyoming: 26 occurrences (Hartman and Nelson 1995).
Conservation, Ecology & Research
Isely, D. 1998. Native and Naturalized Leguminosae (Fabaceae) of the United States (exclusive of Alaska and Hawaii). Salt Lake City, Utah: Monte L. Bean Life Science Museum, Brigham Young University.