CPC National Collection Plant Profile
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CPC National Collection Plant Profile
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Astragalus humillimus
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Astragalus humillimus is Fully Sponsored |
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Primary
custodian for this plant in the CPC National Collection of Endangered
Plants is: |
Joyce Maschinski, Ph.D. contributed to this Plant Profile. |
| Astragalus humillimus | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Mancos milkvetch is a diminutive, tufted perennial that is found in rock crevices. The leaves have spines along their central veins that remain after the leaflets fall. The plant flowers in late April and early May producing pale lavender to purple blooms. (ESIS 2002) Reaching for a closer look at the pale lavender to purple flowers can be a prickly experience. Astragalus humillimus was rediscovered near Farmington, New Mexico, in 1980. It was formerly known from only a single collection made in 1875. It is currently known from 13 sites, 10 in New Mexico, and 3 in Colorado. High mortality occurs during periods of extended drought, but the populations regenerate from seed during more favorable years. (New Mexico Rare Plant Technical Council 1999)
State Range
Distribution
Number Left
State/Area Protection
Ecological Relationships
Threats
Current Research Summary
Current Management Summary
Research Management Needs
Ex Situ Needs
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References |
Barneby, R.C. 1964. Atlas of North American Astragalus. Bronx, New York: New York Botanical Garden. 1188p. |
Tepedino, V.J. 2002. Section III. Environmental Monitoring. III.5 The Reproductive Biology of Rare Rangeland Plants and Their Vulnerability to Insecticides. Grasshoppers: Their biology, identification and management, User Handbook. |
New Mexico Native plants Protection Advisory Committee. 1984 A handbook of rare and endemic plants of New Mexico. Albuquerque, NM: University of New Mexico Press. |
Sivinski, R.; Knight, P. Narrow Endemism in the New Mexico Flora. Gen. Tech. Rep. RM-GTR-283. Proceedings of the Southwestern Rare and Endangered Plant Conference; September 11-14; Flagstaff, AZ. In: Maschinski, J.; Hammond, H.D.; Holter, L., editors. 1996. USDA and US Forest Service. p 286-296. |
(1999). New Mexico Rare Plants Information. New Mexico Rare Plant Technical Council: Albuquerque, NM. Version 15. http://nmrareplants.unm.edu/nmrptc/rarelist.htm. Accessed: 2002. |
ESIS. (1998). Endangered Species System (ESIS): Fish and Wildlife Exchange. [Web site;] Virginia Tech. http://fwie.fw.vt.edu/WWW/esis/. Accessed: 2002. |
NatureServe. (2008). NatureServe Explorer: An online encyclopedia of life [web application]. [Internet].Version 7.0. NatureServe, Arlington, Virginia. http://www.natureserve.org/explorer. Accessed: (June 17, 2008). |
Engel, L.T. 1992. Petiolar anatomy of north american astragalus fabaceae with persistent petioles. Aliso. 13(2): 339-346. |
USFWS. 1976. Proposed Endangered Status for 1700 U.S. Plants. Federal Register. 41: 24523-24572. |
USFWS. 1984. Four Plants Proposed for Listing. Endangered Species Technical Bulletin. 9, 7: 1, 4-5. |
USFWS. 1984. Proposal to Determine Astragalus humillimus (Mancos milkvetch) to be an Endangered Species. Federal Register. 49, 126: 26610-26614. |
USFWS. 1985. Final Rule to Determine Astragalus humillimus to be Endangered. Federal Register. 50, 124: 26568-26572. |
USFWS. 1985. Final Rule to Determine Astragalus humillimus to be Endangered: correction. Federal Register. 50, 144: 28423. |
USFWS. 1987. Regional News--Region 2. Endangered Species Technical Bulletin. 12, 8: 3, 9. |
Knight, P.J. 1981. Status report - Astragalus humillimus. New Mexico State Heritage Program. |
Sivinski, R.; Lightfoot, K. 1995. Endangered plant study performance report E9. Albuquerque, New Mexico: U.S. Fish & Wildlife Service. |
USFWS. 1989. Mancos Milkvetch (Astragalus humillimus) Recovery Plan. Albuquerque, New Mexico: U.S. Fish and Wildlife Service. p.47. |
| This profile was updated on 3/4/2010 |