By Sarah Dutton
May 10 2019
Astragalus osterhoutii M. E. Jones (or Osterhout milkvetch) is an herbaceous plant known only from a 15-mile range in the mountains of Grand County, Colorado. Due to its limited range, small population, and vulnerability to habitat loss, it was listed as an endangered species in 1989. Today, Osterhout milkvetch continues to be threatened by human impacts on its habitat, such as recreational off-highway vehicle use, road maintenance, land development, and mining.