Astragalus humillimus A.Gray (1876:235)
Mancos milkvetch
Taxonomy & Nomenclature
Synonyms: Tragacantha humillima (A.Gray) Kuntze in Revis. Gen. Pl. 2: 945 (1891); Phaca humillima (A.Gray) Rydb. in Bull. Torrey Bot. Club 32: 665 (1905)
Conservation Status
Rediscovered (Knapp et al., 2020; contra Humphreys et al., 2019:SD1)
Distribution
Montezuma County, Colorado & San Juan County, New Mexico, USA
Biology & Ecology
Hypodigm
Media
References
Ackerfield, J. (2015). Flora of Colorado. Botanical Research Institute of Texas, Fort Worth, TX. 818 pp.
Allred, K. W. (2012). Flora Neomexicana, ed. 2, 1: 1-599. Range Science Herbarium, Las Cruces, New Mexico.
Ayensu, E. S. and Defilipps, R.A. (1978). Endangered and Threatened Plants of the United States: 1-403. Smithsonian Institution and WWF-US, Washington DC.
Barneby, R. C. (1964). Atlas of North American Astragalus. 2 Vols. New York Botanical Garden, Bronx, New York. 1188 pp.
Govaerts, R. (1995). World Checklist of Seed Plants 1(1, 2): 1-483, 529. MIM, Deurne.
Handwerk, J., Grunau, L. and Spackman-Panjabi, S. (2015). Colorado Wildlife Action Plan: 2015 Rare Plant Addendum. Colorado Natural Heritage Program, Colorado State University, Fort Collins, Colorado, USA.
Heil, K. D, O'Kane, S. L., jnr.,Reeves, L. M. and Clifford, A. (2013). Flora of the Four Corners Region. Vascular Plants of the San Juan River Drainage: Arizona, Colorado, New Mexico, and Utah. Monographs in systematic botany from the Missouri Botanical Garden, Vol. 124, Missouri Botanical Garden Press, St. Louis, MO. xvi + 1098 pp.
Humphreys, Aelys M., Govaerts, Rafaël, Ficinski, Sarah Z., Lughadha, Eimear Nic and Vorontsova, Maria S. (2019). Global dataset shows geography and life form predict modern plant extinction and rediscovery. Nature Ecology & Evolution 3: 1043-1047. https://doi.org/10.1038/s41559-019-0906-2 [Supplementary Dataset 1]
Kartesz, J. T. (1994). A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Knapp, Wesley M., Frances, Anne, Noss, Reed, Naczi, Robert F. C., Weakley, Alan, Gann, George D., Baldwin, Bruce G., Miller, James, McIntyre, Patrick, Mishler, Brent D., Moore, Gerry, Olmstead, Richard G., Strong, Anna, Gluesenkamp, Daniel and Kennedy, Kathryn. (2020). Regional records improve data quality in determining plant extinction rates. Nature Ecology & Evolution 4: 512-514. https://doi.org/10.1038/s41559-020-1146-1
Knight, P. J. (1981). Status report - Astragalus humillimus. New Mexico State Heritage Program.
Knight, P. J. (1989). Mancos milkvetch recovery plan. Unpublished report prepared for the US Fish and Wildlife Service, Alburquerque, NM.
Knight, P. and House, D. (1989). Mancos Milkvetch (Astragalus humillimus) Recovery Plan. Prepared for the U.S. Fish & Wildlife Service, Region 2, Albuquerque, NM.
NatureServe. (2023). Astragalus humillimus: Mancos Milkvetch. NatureServe Network Biodiversity Location Data accessed through NatureServe Explorer [web application]. NatureServe, Arlington, Virginia. Available https://explorer.natureserve.org/ [Accessed 15 December 2023]
New Mexico Native Plant Protection Advisory Committee. (1984). A handbook of rare and endemic plants of New Mexico. Univ. New Mexico Press, Albuquerque. 291 pp.
Spackman, S., Jennings, B., Coles, J., Dawson, C., Minton, M., Kratz, A. and Spurrier, C. (1997). Colorado rare plant field guide. Prepared for Bureau of Land Management, U.S. Forest Service and U.S. Fish and Wildlife Service by Colorado Natural Heritage Program.
USFWS (U.S. Fish and Wildlife Service). (1985). Final rule to determine Astragalus humillimus to be endangered. Federal Register 50(124): 26568-26572.
USFWS (U.S. Fish and Wildlife Service). (2011). Mancos milkvetch (Astraglus humillimus) 5-year review summary and evaluation. July 2011. New Mexico Ecological Services Office, Alburquerque, New Mexico.
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.