Taxon: Sphenopholis obtusata (Michx.) Scribn.

Summary

Genus:

Sphenopholis

Family:

Poaceae (alt. Gramineae)

Subfamily:

Pooideae

Tribe:

Poeae

Subtribe:

Aveninae

Nomen number:

35246

Place of publication:

Rhodora 8:144. 1906

Verified:

04/07/2000 ARS Systematic Botanists.

Accessions:

4 (2 active, 2 available) in National Plant Germplasm System. (Map it)

Other conspecific taxa

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

Basionym
Aira obtusata Michx.

No images

Conservation Status

Reference(s)

Cronquist, A. et al. 1972-. Intermountain flora.
Erdman, K. S. 1965. Taxonomy of the genus Sphenopholis (Gramineae). Iowa State J. Sci. 39:297.
Finot, V. L. et al. 2004. A revision of Trisetum, Peyritschia, and Sphenopholis (Poaceae: Pooideae: Aveninae) in Mexico and Central America. Ann. Missouri Bot. Gard. 91:5-6.
Gleason, H. A. & A. Cronquist. 1991. Manual of vascular plants of northeastern United States and adjacent Canada, ed. 2
Hitchcock, A. S. 1936. Manual of the grasses of the West Indies.
Martin, W. C. & C. R. Hutchins. 1980. A flora of New Mexico.
McGregor, R. L. et al. (The Great Plains Flora Association). 1986. Flora of the Great Plains.
McVaugh, R. 1983-. Flora Novo-Galiciana.
Strausbaugh, T. D. & E. L. Core. 1978. Flora of West Virginia, ed. 2.
Voss, E. 1972-. Michigan flora.
Wofford, B. E. Database of Tennessee vascular plants (on-line resource). Note: recognizes two vars.
1961. Webster's third new international dictionary.

Common names

Language	Name	seq	Citation
English	prairie grass	1	1961. Webster's third new international dictionary.
English	prairie wedge grass	1	Strausbaugh, T. D. & E. L. Core. 1978. Flora of West Virginia, ed. 2.
English	wedge grass	1	Gleason, H. A. & A. Cronquist. 1991. Manual of vascular plants of northeastern United States and adjacent Canada, ed. 2

Distribution

order_code	Status	Continent	Subcontinent	Country	State	Note	Reference
1	Native	Northern America	Eastern Canada	Canada	Newfoundland and Labrador
1	Native	Northern America	Eastern Canada	Canada	Nova Scotia
1	Native	Northern America	Eastern Canada	Canada	Ontario
1	Native	Northern America	Eastern Canada	Canada	Québec
1	Native	Northern America	North-Central U.S.A.	United States	Illinois
1	Native	Northern America	North-Central U.S.A.	United States	Iowa
1	Native	Northern America	North-Central U.S.A.	United States	Kansas		McGregor, R. L. et al. (The Great Plains Flora Association). 1986. Flora of the Great Plains.
1	Native	Northern America	North-Central U.S.A.	United States	Minnesota
1	Native	Northern America	North-Central U.S.A.	United States	Missouri
1	Native	Northern America	North-Central U.S.A.	United States	Nebraska		McGregor, R. L. et al. (The Great Plains Flora Association). 1986. Flora of the Great Plains.
1	Native	Northern America	North-Central U.S.A.	United States	North Dakota		McGregor, R. L. et al. (The Great Plains Flora Association). 1986. Flora of the Great Plains.
1	Native	Northern America	North-Central U.S.A.	United States	Oklahoma		McGregor, R. L. et al. (The Great Plains Flora Association). 1986. Flora of the Great Plains.
1	Native	Northern America	North-Central U.S.A.	United States	South Dakota		McGregor, R. L. et al. (The Great Plains Flora Association). 1986. Flora of the Great Plains.
1	Native	Northern America	North-Central U.S.A.	United States	Wisconsin
1	Native	Northern America	Northeastern U.S.A.	United States	Connecticut
1	Native	Northern America	Northeastern U.S.A.	United States	Indiana
1	Native	Northern America	Northeastern U.S.A.	United States	Maine
1	Native	Northern America	Northeastern U.S.A.	United States	Massachusetts
1	Native	Northern America	Northeastern U.S.A.	United States	Michigan		Voss, E. 1972-. Michigan flora.
1	Native	Northern America	Northeastern U.S.A.	United States	New Hampshire
1	Native	Northern America	Northeastern U.S.A.	United States	New Jersey
1	Native	Northern America	Northeastern U.S.A.	United States	New York
1	Native	Northern America	Northeastern U.S.A.	United States	Ohio
1	Native	Northern America	Northeastern U.S.A.	United States	Pennsylvania
1	Native	Northern America	Northeastern U.S.A.	United States	Rhode Island
1	Native	Northern America	Northeastern U.S.A.	United States	Vermont
1	Native	Northern America	Northeastern U.S.A.	United States	West Virginia		Strausbaugh, T. D. & E. L. Core. 1978. Flora of West Virginia, ed. 2.
1	Native	Northern America	Northern Mexico	Mexico	Baja California (Norte)		McVaugh, R. 1983-. Flora Novo-Galiciana.
1	Native	Northern America	Northern Mexico	Mexico	Chihuahua		McVaugh, R. 1983-. Flora Novo-Galiciana.
1	Native	Northern America	Northern Mexico	Mexico	Coahuila de Zaragoza		McVaugh, R. 1983-. Flora Novo-Galiciana.
1	Native	Northern America	Northern Mexico	Mexico	Durango		McVaugh, R. 1983-. Flora Novo-Galiciana.
1	Native	Northern America	Northern Mexico	Mexico	Nuevo León		McVaugh, R. 1983-. Flora Novo-Galiciana.
1	Native	Northern America	Northern Mexico	Mexico	Sonora		McVaugh, R. 1983-. Flora Novo-Galiciana.
1	Native	Northern America	Northwestern U.S.A.	United States	Colorado
1	Native	Northern America	Northwestern U.S.A.	United States	Idaho		Cronquist, A. et al. 1972-. Intermountain flora.
1	Native	Northern America	Northwestern U.S.A.	United States	Montana
1	Native	Northern America	Northwestern U.S.A.	United States	Oregon
1	Native	Northern America	Northwestern U.S.A.	United States	Washington
1	Native	Northern America	Northwestern U.S.A.	United States	Wyoming
1	Native	Northern America	South-Central U.S.A.	United States	New Mexico		Martin, W. C. & C. R. Hutchins. 1980. A flora of New Mexico.
1	Native	Northern America	South-Central U.S.A.	United States	Texas
1	Native	Northern America	Southeastern U.S.A.	United States	Alabama
1	Native	Northern America	Southeastern U.S.A.	United States	Arkansas
1	Native	Northern America	Southeastern U.S.A.	United States	Delaware
1	Native	Northern America	Southeastern U.S.A.	United States	Florida
1	Native	Northern America	Southeastern U.S.A.	United States	Georgia
1	Native	Northern America	Southeastern U.S.A.	United States	Kentucky
1	Native	Northern America	Southeastern U.S.A.	United States	Louisiana
1	Native	Northern America	Southeastern U.S.A.	United States	Maryland
1	Native	Northern America	Southeastern U.S.A.	United States	Mississippi
1	Native	Northern America	Southeastern U.S.A.	United States	North Carolina
1	Native	Northern America	Southeastern U.S.A.	United States	South Carolina
1	Native	Northern America	Southeastern U.S.A.	United States	Tennessee		Wofford, B. E. Database of Tennessee vascular plants (on-line resource). Note: recognizes two vars.
1	Native	Northern America	Southeastern U.S.A.	United States	Virginia
1	Native	Northern America	Southern Mexico	Mexico	Aguascalientes		McVaugh, R. 1983-. Flora Novo-Galiciana.
1	Native	Northern America	Southern Mexico	Mexico	Ciudad de México		McVaugh, R. 1983-. Flora Novo-Galiciana.
1	Native	Northern America	Southern Mexico	Mexico	Guanajuato		McVaugh, R. 1983-. Flora Novo-Galiciana.
1	Native	Northern America	Southern Mexico	Mexico	Jalisco	n.	McVaugh, R. 1983-. Flora Novo-Galiciana.
1	Native	Northern America	Southern Mexico	Mexico	Oaxaca		McVaugh, R. 1983-. Flora Novo-Galiciana.
1	Native	Northern America	Southern Mexico	Mexico	Puebla		McVaugh, R. 1983-. Flora Novo-Galiciana.
1	Native	Northern America	Southwestern U.S.A.	United States	Arizona
1	Native	Northern America	Southwestern U.S.A.	United States	California
1	Native	Northern America	Southwestern U.S.A.	United States	Nevada		Cronquist, A. et al. 1972-. Intermountain flora.
1	Native	Northern America	Southwestern U.S.A.	United States	Utah		Cronquist, A. et al. 1972-. Intermountain flora.
1	Native	Northern America	Subarctic America	Canada	Northwest Territories	s.w.
1	Native	Northern America	Subarctic America	United States	Alaska
1	Native	Northern America	Western Canada	Canada	Alberta	s.
1	Native	Northern America	Western Canada	Canada	British Columbia	s.
1	Native	Northern America	Western Canada	Canada	Manitoba	s.
1	Native	Northern America	Western Canada	Canada	Saskatchewan	s.
1	Native	Southern America	Caribbean	Bermuda
1	Native	Southern America	Caribbean	Dominican Republic

Native
Northern America

SUBARCTIC AMERICA: Canada [Northwest Territories (s.w.)], United States [Alaska]
EASTERN CANADA: Canada [Québec, Nova Scotia, Ontario, Newfoundland and Labrador]
WESTERN CANADA: Canada [Saskatchewan (s.), Alberta (s.), Manitoba (s.), British Columbia (s.)]
NORTHEASTERN U.S.A.: United States [Connecticut, Indiana, Maine, Massachusetts, Michigan, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia]
NORTH-CENTRAL U.S.A.: United States [Illinois, Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota, Oklahoma, South Dakota, Wisconsin]
NORTHWESTERN U.S.A.: United States [Colorado, Idaho, Montana, Oregon, Washington, Wyoming]
SOUTHEASTERN U.S.A.: United States [Alabama, Arkansas, Delaware, Florida, Georgia, Kentucky, Louisiana, Maryland, Mississippi, North Carolina, South Carolina, Tennessee, Virginia]
SOUTH-CENTRAL U.S.A.: United States [New Mexico, Texas]
SOUTHWESTERN U.S.A.: United States [Arizona, California, Nevada, Utah]
NORTHERN MEXICO: Mexico [Baja California (Norte), Chihuahua, Coahuila de Zaragoza, Durango, Nuevo León, Sonora]
SOUTHERN MEXICO: Mexico [Aguascalientes, Ciudad de México, Guanajuato, Jalisco (n.), Oaxaca, Puebla]

Southern America

CARIBBEAN: Bermuda, Dominican Republic

Reference(s)

Cronquist, A. et al. 1972-. Intermountain flora.
Martin, W. C. & C. R. Hutchins. 1980. A flora of New Mexico.
McGregor, R. L. et al. (The Great Plains Flora Association). 1986. Flora of the Great Plains.
McVaugh, R. 1983-. Flora Novo-Galiciana.
Strausbaugh, T. D. & E. L. Core. 1978. Flora of West Virginia, ed. 2.
Voss, E. 1972-. Michigan flora.
Wofford, B. E. Database of Tennessee vascular plants (on-line resource). Note: recognizes two vars.

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=35246. Accessed 12 May 2026.