Taxon: Astragalus mollissimus Torr.

Summary

Genus:

Astragalus

Family:

Fabaceae (alt. Leguminosae)

Subfamily:

Faboideae

Tribe:

Galegeae

Subtribe:

Astragalinae

Nomen number:

310123

Place of publication:

Ann. Lyceum Nat. Hist. New York 2:178. 1827 (Acct. pl. Rocky Mts.)

Verified:

09/01/1988 ARS Systematic Botanists.

Accessions:

5 (4 active, 4 available) in National Plant Germplasm System. (Map it)

Other conspecific taxa

Astragalus mollissimus Torr. var. coryi Tidestr. (0 active accession[s])
Astragalus mollissimus Torr. var. earlei (Greene ex Rydb.) Tidestr. (0 active accession[s])
Astragalus mollissimus Torr. var. mollissimus (0 active accession[s])
Astragalus mollissimus Torr. var. thompsoniae (S. Watson) Barneby (1 active accession[s])

Autonyms (not in current use), synonyms and invalid designations

Images (1 total. Click on image for more.)

Conservation Status

Reference(s)

Barneby, R. C. 1964. Atlas of North American Astragalus. Part II. The Cercidothrix, Hypoglottis, Piptolodoid, Trimeniaeus and Orophaca Astragali. Mem. New York Bot. Gard. 13:733, 736.
Correll, D. S. & M. C. Johnston. 1970. Manual of the vascular plants of Texas
Cronquist, A. et al. 1972-. Intermountain flora.
Kingsbury, J. M. 1964. Poisonous plants of the United States and Canada. Note: poisonous
McGregor, R. L. et al. (The Great Plains Flora Association). 1986. Flora of the Great Plains.
Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:559-902. DOI: 10.1016/j.mb.2016.06.017.
Welsh, S. L. et al. 1987. A Utah flora. Great Basin Naturalist Mem. 9.

Common names

Language	Name	seq	Citation
English	crazyweed	1	Correll, D. S. & M. C. Johnston. 1970. Manual of the vascular plants of Texas
English	purple locoweed	1	Correll, D. S. & M. C. Johnston. 1970. Manual of the vascular plants of Texas
English	woolly locoweed	1	Barneby, R. C. 1964. Atlas of North American Astragalus. Part II. The Cercidothrix, Hypoglottis, Piptolodoid, Trimeniaeus and Orophaca Astragali. Mem. New York Bot. Gard. 13:733, 736.

Distribution

order_code	Status	Continent	Subcontinent	Country	State	Note	Reference
1	Native	Northern America	North-Central U.S.A.	United States	Kansas	w.	Barneby, R. C. 1964. Atlas of North American Astragalus. Part II. The Cercidothrix, Hypoglottis, Piptolodoid, Trimeniaeus and Orophaca Astragali. Mem. New York Bot. Gard. 13:733, 736.
1	Native	Northern America	North-Central U.S.A.	United States	Nebraska	w. & s.-c.	Barneby, R. C. 1964. Atlas of North American Astragalus. Part II. The Cercidothrix, Hypoglottis, Piptolodoid, Trimeniaeus and Orophaca Astragali. Mem. New York Bot. Gard. 13:733, 736.
1	Native	Northern America	North-Central U.S.A.	United States	Oklahoma	w.	Barneby, R. C. 1964. Atlas of North American Astragalus. Part II. The Cercidothrix, Hypoglottis, Piptolodoid, Trimeniaeus and Orophaca Astragali. Mem. New York Bot. Gard. 13:733, 736.
1	Native	Northern America	North-Central U.S.A.	United States	South Dakota	s.w.	Barneby, R. C. 1964. Atlas of North American Astragalus. Part II. The Cercidothrix, Hypoglottis, Piptolodoid, Trimeniaeus and Orophaca Astragali. Mem. New York Bot. Gard. 13:733, 736.
1	Native	Northern America	Northern Mexico	Mexico	Chihuahua		Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:559-902. DOI: 10.1016/j.mb.2016.06.017.
1	Native	Northern America	Northern Mexico	Mexico	Coahuila de Zaragoza		Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:559-902. DOI: 10.1016/j.mb.2016.06.017.
1	Native	Northern America	Northern Mexico	Mexico	Durango		Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:559-902. DOI: 10.1016/j.mb.2016.06.017.
1	Native	Northern America	Northern Mexico	Mexico	Nuevo León		Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:559-902. DOI: 10.1016/j.mb.2016.06.017.
1	Native	Northern America	Northern Mexico	Mexico	San Luis Potosí		Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:559-902. DOI: 10.1016/j.mb.2016.06.017.
1	Native	Northern America	Northern Mexico	Mexico	Zacatecas		Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:559-902. DOI: 10.1016/j.mb.2016.06.017.
1	Native	Northern America	Northwestern U.S.A.	United States	Colorado		Barneby, R. C. 1964. Atlas of North American Astragalus. Part II. The Cercidothrix, Hypoglottis, Piptolodoid, Trimeniaeus and Orophaca Astragali. Mem. New York Bot. Gard. 13:733, 736.
1	Native	Northern America	Northwestern U.S.A.	United States	Wyoming	s.e.	Barneby, R. C. 1964. Atlas of North American Astragalus. Part II. The Cercidothrix, Hypoglottis, Piptolodoid, Trimeniaeus and Orophaca Astragali. Mem. New York Bot. Gard. 13:733, 736.
1	Native	Northern America	South-Central U.S.A.	United States	New Mexico	s.e. & c.	Barneby, R. C. 1964. Atlas of North American Astragalus. Part II. The Cercidothrix, Hypoglottis, Piptolodoid, Trimeniaeus and Orophaca Astragali. Mem. New York Bot. Gard. 13:733, 736.
1	Native	Northern America	South-Central U.S.A.	United States	Texas		Barneby, R. C. 1964. Atlas of North American Astragalus. Part II. The Cercidothrix, Hypoglottis, Piptolodoid, Trimeniaeus and Orophaca Astragali. Mem. New York Bot. Gard. 13:733, 736.
1	Native	Northern America	Southern Mexico	Mexico	Aguascalientes		Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:559-902. DOI: 10.1016/j.mb.2016.06.017.
1	Native	Northern America	Southern Mexico	Mexico	Ciudad de México		Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:559-902. DOI: 10.1016/j.mb.2016.06.017.
1	Native	Northern America	Southern Mexico	Mexico	Guanajuato		Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:559-902. DOI: 10.1016/j.mb.2016.06.017.
1	Native	Northern America	Southern Mexico	Mexico	Guerrero		Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:559-902. DOI: 10.1016/j.mb.2016.06.017.
1	Native	Northern America	Southern Mexico	Mexico	Hidalgo		Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:559-902. DOI: 10.1016/j.mb.2016.06.017.
1	Native	Northern America	Southern Mexico	Mexico	Jalisco		Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:559-902. DOI: 10.1016/j.mb.2016.06.017.
1	Native	Northern America	Southern Mexico	Mexico	México		Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:559-902. DOI: 10.1016/j.mb.2016.06.017.
1	Native	Northern America	Southern Mexico	Mexico	Puebla		Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:559-902. DOI: 10.1016/j.mb.2016.06.017.
1	Native	Northern America	Southern Mexico	Mexico	Querétaro		Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:559-902. DOI: 10.1016/j.mb.2016.06.017.
1	Native	Northern America	Southern Mexico	Mexico	Tlaxcala		Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:559-902. DOI: 10.1016/j.mb.2016.06.017.
1	Native	Northern America	Southern Mexico	Mexico	Veracruz de Ignacio de la Llave		Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:559-902. DOI: 10.1016/j.mb.2016.06.017.
1	Native	Northern America	Southwestern U.S.A.	United States	Arizona	n.e.	Barneby, R. C. 1964. Atlas of North American Astragalus. Part II. The Cercidothrix, Hypoglottis, Piptolodoid, Trimeniaeus and Orophaca Astragali. Mem. New York Bot. Gard. 13:733, 736.
1	Native	Northern America	Southwestern U.S.A.	United States	Nevada	s.e.	Barneby, R. C. 1964. Atlas of North American Astragalus. Part II. The Cercidothrix, Hypoglottis, Piptolodoid, Trimeniaeus and Orophaca Astragali. Mem. New York Bot. Gard. 13:733, 736.
1	Native	Northern America	Southwestern U.S.A.	United States	Utah		Barneby, R. C. 1964. Atlas of North American Astragalus. Part II. The Cercidothrix, Hypoglottis, Piptolodoid, Trimeniaeus and Orophaca Astragali. Mem. New York Bot. Gard. 13:733, 736.

Native
Northern America

NORTH-CENTRAL U.S.A.: United States [Kansas (w.), Nebraska (w. & s.-c.), Oklahoma (w.), South Dakota (s.w.)]
NORTHWESTERN U.S.A.: United States [Colorado, Wyoming (s.e.)]
SOUTH-CENTRAL U.S.A.: United States [New Mexico (s.e. & c.), Texas]
SOUTHWESTERN U.S.A.: United States [Arizona (n.e.), Nevada (s.e.), Utah]
NORTHERN MEXICO: Mexico [Chihuahua, Coahuila de Zaragoza, Durango, Nuevo León, San Luis Potosí, Zacatecas]
SOUTHERN MEXICO: Mexico [Aguascalientes, Ciudad de México, Guanajuato, Guerrero, Hidalgo, Jalisco, México, Puebla, Querétaro, Tlaxcala, Veracruz de Ignacio de la Llave]

Reference(s)

Barneby, R. C. 1964. Atlas of North American Astragalus. Part II. The Cercidothrix, Hypoglottis, Piptolodoid, Trimeniaeus and Orophaca Astragali. Mem. New York Bot. Gard. 13:733, 736.
Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:559-902. DOI: 10.1016/j.mb.2016.06.017.

Economic Uses

Usage	Type	Note	Reference
Vertebrate poisons	mammals	to livestock	Barneby, R. C. 1964. Atlas of North American Astragalus. Part II. The Cercidothrix, Hypoglottis, Piptolodoid, Trimeniaeus and Orophaca Astragali. Mem. New York Bot. Gard. 13:733, 736.
Vertebrate poisons	mammals	to livestock	Kingsbury, J. M. 1964. Poisonous plants of the United States and Canada. Note: poisonous

Cite as: USDA, Agricultural Research Service, National Plant Germplasm System. 2026. Germplasm Resources Information Network (GRIN Taxonomy). National Germplasm Resources Laboratory, Beltsville, Maryland.
URL: https://npgstest.ars-grin.gov/gringlobal/taxon/taxonomydetail?id=310123. Accessed 13 May 2026.