Astragalus columbianus Barneby (year?)

Columbia milk-vetch



Taxonomy & Nomenclature



Conservation Status

Last record: 1922

Rediscovered in 1976



Columbia River, North America


Biology & Ecology










Ayensu, E.S. & Defilipps, R.A. (1978). Endangered and Threatened Plants of the United States: 1-403. Smithsonian Institution and WWF-US, Washington DC.

Barneby, R. (1964). Astragalus columbianus, in: Atlas of North American Astragalus. Mem. New York Bot. Gard. 13: 649-650.

Daubenmire, R. (1970). Steppe vegetation of Washington. Wash. State Agric. Exp. Sta. Techn. Bull. 62: 1-131.

Department of the Interior, Fish and Wildlife Service. (1975). Threatened or Endangered Fauna or Flora. Federal Register 40: (127): 27919.

Fertig, Walter. (2021). What Ever Happened to Taylor’s Draba? The Search for Historical and Extirpated Plants in Washington. Douglasia 45(1): 7-13.

Hitchcock, C. L. and Cronquist, A. (1973). Flora of the Pacific Northwest. University of Washington Press, Seattle.

Humphreys, Aelys M. (2019). Global dataset shows geography and life form predict modern plant extinction and rediscovery. Nature Ecology & Evolution 3: 1043-1047. [Abstract] [Supplementary Dataset 1]

Sauer, R. H., Mastrogiuseppe, J. D. and Smookler, R. H. (1979). Astragalus columbianus (Leguminosae) – rediscovery of an "extinct" species. Brittonia 31(2): 261-264. [Abstract]

Walter, Kerry S. and Gillett, Harriet J. (eds.). (1998). 1997 IUCN Red List of Threatened Plants. Compiled by the World Conservation Monitoring Centre. Gland, Switzerland & Cambridge, UK: IUCN – The World Conservation Union. lxiv + 862 pp.


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