Tridens is a genus of perennial grasses in the family Poaceae native to the Americas.[3][4]
- Species[2][5][6][7][8]
- 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 buckleyanus (Vasey ex L.H.Dewey) Nash - Texas
- Tridens carolinianus (Steud.) Henrard - southeastern USA (LA MS AL GA FL SC NC)
- Tridens congestus (L.H.Dewey) Nash – pink fluffgrass USA (AZ TX)
- Tridens eragrostoides (Vasey & Scribn.) Nash – lovegrass tridens - southern USA (TX AZ NM AL FL), Mexico, Cuba, Venezuela
- 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 muticus (Torr.) Nash – slim tridens - southwestern + south-central USA (CA NV AZ UT CO NM TX OK KS MO AR LA), Mexico (Baja California, Sonora, Chihuahua, Durango, Coahuila, Zacatecas, Nuevo León, Querétaro, San Luis Potosí, Tamaulipas)
- Tridens nicorae Anton - northern Argentina
- Tridens × oklahomensis (Feath.) Feath. - Oklahoma (hybrid T. flavus × T. strictus)
- Tridens riograndensis Acedo & Llamas[9] - 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[2]
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Acedo, C. and F. Llamas. (2003). A new species of Tridens (Poaceae) from Brazil. Systematic Botany 28:2 313-16.