Regularity: Regularly occurring
Localities documented in Tropicos sources
United States (North America)
Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
- Anonymous. 1986. List-Based Rec., Soil Conserv. Serv., U.S.D.A. Database of the U.S.D.A., Beltsville. http://www.tropicos.org/Reference/1103
- Hartman, R. L. & B. E. Nelson. 1998. Novelties from North America north of Mexico: A 20-Year Vascular plant Diversity Baseline. 1–51 (mss.). http://www.tropicos.org/Reference/11044
- Barneby, R. C. 1980. Dragma Hippomanicum V: Two New Astragali from Intermountain United States. Brittonia 32(1): 24–29. http://www.tropicos.org/Reference/97
Global Range: Known from a range of 51.6km (34.9 mi) (Morefield 2001).
National NatureServe Conservation Status
Rounded National Status Rank: N2 - Imperiled
NatureServe Conservation Status
Rounded Global Status Rank: G2 - Imperiled
Reasons: Known from two mountain ranges in Nevada, the Sheep and Pintwater, in two counties Clark and Lincoln (16-20 occurrences estimated). All of the known occurrences are in very inaccessible areas of the Desert National Wildlife Refuge. This species hasn't been thoroughly surveyed and the last survey was conducted in 1993. This species occurs in crevices and on ledges of carbonate cliffs in remote areas that aren't easily accessed, and direct human threats probably aren't threats.