The Conservation Status of Picabo Milkvetch (Astragalus Oniciformis Barneby)
Moseley RK and Popovich SJ. 1995. The Conservation Status of Picabo Milkvetch (Astragalus Oniciformis Barneby)
Astragalus oniciformis Barneby (Picabo milkvetch) is a narrowlydistributed endemic to the north-central portion of the eastern Snake River Plain. Habitat for nearly the entire known distribution of this species is managed by the BLM, mostly the Shoshone District, but also the Idaho Falls District. Due to its rarity, it is a federal category 3c candidate and a BLM sensitive species. Intensive searches, beginning in 1981, have resolved the distribution, abundance, and conservation status of the species. Thirty-six occurrences, consisting of numerous subpopulations, occur within a main range of about 42 x 13 miles, with several disjunct populations lying outside the core of its distribution. Short- and long-term threats have been identified. Any conservation strategy developed to assure the long-term persistence of Picabo milkvetch as a viable evolutionary unit must take into account the decline of the sagebrush-steppe ecosystem on the Snake River Plain.
- Type
- Unpublished Report
- Authors
- Moseley, Robert; Popovich, Steve
- Date of Issue
- 1995-01
- Units
- CRMO
- Keywords
- astragalus oniciformis, Picabo milkvetch, Rare Plant
- Subjects
- Ecological Framework: Biological Integrity | At-risk Biota | T&E Species and Communities