Tridens is a genus of perennial grasses in the family Poaceae native to the Americas.Roemer, Johann Jakob & Schultes, Josef August. 1817. Systema Vegetabilium 2: 34, 599-600 in LatinTropicos, Tridens Roem. & Schult.
Species 13 species are accepted.Biota of North America Program 2013 county distribution maps
Tridens albescens (Vasey) Wooton & Standl. - southwest + south-central USA (AZ NM TX LA AR OK KS), Mexico (Chihuahua, Durango, Coahuila, Tamaulipas, Nuevo León) Tridens ambiguus (Elliott) Schult. – pine barren fluffgrass - southeastern USA (TX LA MS AL GA FL SC NC) Tridens brasiliensis (Nees ex Steud.) Parodi - Brazil, Paraguay, Uruguay, Argentina Tridens carolinianus (Steud.) Henrard - southeastern USA (LA MS AL GA FL SC NC) Tridens chapmanii – south-central and southeastern United States to New Jersey Tridens congestus (L.H.Dewey) Nash – pink fluffgrass USA (AZ TX) Tridens flaccidus (Döll) Parodi - Brazil, Guyana, Venezuela, Colombia Tridens flavus (L.) Hitchc. – purpletop - Ontario, eastern + central USA, Nuevo León Tridens hackelii (Arechav.) Parodi - Brazil, Uruguay, Argentina Tridens nicorae Anton - northern Argentina Tridens × oklahomensis (Feath.) Feath. - Oklahoma (hybrid T. flavus × T. strictus) Tridens riograndensis Acedo & LlamasAcedo, C. and F. Llamas. (2003). A new species of Tridens (Poaceae) from Brazil. Systematic Botany 28:2 313-16. - Rio Grande do Sul in Brazil Tridens strictus (Nutt.) Nash – longspike tridens - southeastern + south-central USA (from TX to FL to IL + PA) Tridens texanus (S. Watson) Nash - USA (TX NM), Mexico (Chihuahua, Durango, Coahuila, Nuevo León, Tamaulipas, San Luis Potosí)
Formerly included
References
External links
Jepson Manual: Tridens USDA Plants Profile