Distribution: Occurring west of the Cascades crest in the Olympic Mountains in Washington; Alaska to the Olympic mountains, northeastern Oregon, Nevada, Utah, and Colorado, east to the Great Plains and eastern Canada.
Habitat: Foothill bluffs and riverbanks to subalpine and alpine ridges and scree.
Flowers: June-August
Origin: Native
Growth Duration: Perennial
Conservation Status: Threatened in Washington (WANHP)
Pollination: Bumblebees, bees, butterflies
[none provided]
Publication: Fl. Franç. (Lamarck) 2: 637. 1779.
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var. cottonii – Cotton's milk-vetch, Cotton's milkvetch
Occurring west of the Cascades crest, where endemic to Olympic Mountains in Washington.
PNW Herbaria: Specimen records of Astragalus australis in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Astragalus australis checklist entry
OregonFlora: Astragalus australis information
E-Flora BC: Astragalus australis atlas page
CalPhotos: Astragalus australis photos
