Osterhout Milkvetch ('Astragalus osterhoutii') and Penland Beardtongue ('Penstemon penlandii') Recovery Plan.

摘要

These endangered species are endemic to Middle Park near Kremmling in Grand County, Colorado. Penland beardtongue is only known from within 2 miles of the type locality with approximately 5,000 plants. The Osterhout milkvetch occurs in scattered colonies over a 15-mile range that overlaps the range of the Penland beardtongue. The total population size is approximately 25,000 to 50,000 individuals. Ninety percent of the Osterhout milkvetch occurs along Muddy Creek, the site of a proposed reservoir. Up to 60 percent of this major population could be adversely affected through either direct or indirect impacts. A biological opinion with conservation measures has been developed to address these impacts. These species occur on desert badlands with fragile soils that are very vulnerable to surface disturbance from various threats, including off-road vehicles, oil and gas drilling, and mining claims.