Palouse Milkvetch (Astragalus arrectus) Element Global Ranking (EGR) report by NatureServe, 2021

Publication Type:

Unpublished

Authors:

Amanda Treher; Sue Vrilakas; C. Lynn Kinter; Walter Fertig

Source:

NatureServe, Arlington, VA, p.5 (2021)

Call Number:

U21TRE01IDUS

Keywords:

Astragalus arrectus, EGR, Element Global Ranking, Idaho, Palouse milkvetch, Washington

Abstract:

NatureServe HQ reviewing the global rank of Astragalus arrectus and would like to narrow down the rank. Ranking this as G2, based on the collective data from group discussion. Rank calculation - Biotics v2.

<i>Astragalus arrectus</i> occurs Washington and adjacent parts of Idaho in the northwestern United States. There are less than 20 known occurrences, 15 of which are in Washington. It was, and may still be, locally abundant in many areas, but much of its Palouse grassland habitat has been fragmented or lost due to the conversion of lands for agriculture, residential, and commercial development. The species is threatened by changes in fire frequency and intensity, invasive species (annual grasses), road maintenance activities (herbicide and vegetation control), and grazing cattle. Surveys are needed to determine the status of historical occurrences and to monitor emerging threats.

Notes:

Reference Code: U21TRE01IDUS <br>

Full Citation: Treher A, Vrilakas S, Kinter LC, Fertig W. 2021. Palouse Milkvetch (Astragalus arrectus) Element Global Ranking (EGR) report by NatureServe, 2021. NatureServe, Arlington, VA. <br>

Location: ELECTRONIC FILE - BOTANY: PLANT SPECIES: Astragalus arrectus <br>

Keywords: Palouse Milkvetch, Astragalus arrectus, Element Global Ranking, EGR, Washington, Idaho <br>