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

(≡ homotypic synonym, = heterotypic synonym, - autonym, I invalid designation)

• Basionym: Poa flava L.
• (≡) Triodia flava (L.) Smyth

Common names:

• purpletop  (Source: Glea Cron) - English
• purpletop tridens  (Source: F NAmer) - English
• redtop  (Source: F NC Tex) - English

Distributional Range:

Native

Northern America

• EASTERN CANADA: Canada [Ontario (s.)]
• NORTHEASTERN U.S.A.: United States [Connecticut, Indiana, Massachusetts, Michigan (s.), New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Vermont, West Virginia]
• NORTH-CENTRAL U.S.A.: United States [Illinois, Iowa, Kansas (e.), Missouri, Nebraska (s.e.), Oklahoma, Wisconsin (s.)]
• SOUTHEASTERN U.S.A.: United States [Alabama, Arkansas, Delaware, Florida (http://www.plantatlas.usf.edu/main.asp?plantID=3403), Georgia, Kentucky, Louisiana, Maryland, Mississippi, North Carolina, South Carolina, Tennessee, Virginia]
• SOUTH-CENTRAL U.S.A.: United States [New Mexico (c.), Texas]
• NORTHERN MEXICO: Mexico [Nuevo León, Tamaulipas]


Naturalized (natzd. elsewhere)

References:

1. Beetle, A. A. 1977. Noteworthy grasses from Mexico V. Phytologia 37:403.
2. Chester, E. W. et al. 1993-1997. Atlas of Tennessee vascular plants.
3. Diggs, G. M., Jr. et al. 1999. Shinner's and Mahler's illustrated flora of North Central Texas.
4. FNA Editorial Committee. 1993-. Flora of North America.
5. Gleason, H. A. & A. Cronquist. 1963. Manual of vascular plants of northeastern United States and adjacent Canada.
6. Gleason, H. A. & A. Cronquist. 1991. Manual of vascular plants of northeastern United States and adjacent Canada, ed. 2
7. Gould, F. W. 1975. The grasses of Texas
8. Hitchcock, A. S. 1950. Manual of the grasses of the United States, ed. 2.
9. McGregor, R. L. et al. (The Great Plains Flora Association). 1986. Flora of the Great Plains.
10. Mejía-Saulés, M. T. & P. Dávila A. 1992. Gramíneas Útiles de México. Cuad. Inst. Biol. 16
11. Ohio Flora Committee (E. L. Braun, T. S. Cooperrider, T. R. Fisher, J. J. Furlow). 1967-. The vascular flora of Ohio.
12. Tateoka, T. 1961. A biosystematic study of Tridens (Gramineae). Amer. J. Bot. 48:572.
13. Townsend, J., ed. South Carolina plant atlas (on-line resource).
14. Voss, E. 1972-. Michigan flora.
15. Willliams, A. H. 1997. Range expansion northward in Illinois and into Wisconsin of Tridens flavus (Poaceae). Rhodora 99:344-351.
16. Wofford, B. E. Database of Tennessee vascular plants (on-line resource). URL: https://herbarium.utk.edu/vascular/vascular-database.php?CategoryID=Monocots&FamilyID=Poaceae&GenusID=Tridens&SpeciesID=flavus target='_blank'
17. Wunderlin, R. & B. Hansen. Atlas of Florida vascular plants (on-line resource).
18. Yatskievych, G. 1999-. Steyermark's Flora of Missouri, revised edition

Cite as: USDA, Agricultural Research Service, National Plant Germplasm System. 2024. Germplasm Resources Information Network (GRIN-Taxonomy).
National Germplasm Resources Laboratory, Beltsville, Maryland. URL: http://gringlobal.iita.org/gringlobal/taxonomydetail.aspx?id=40150. Accessed 3 July 2024.