Tristachya (common name trident grasses) is a genus of African and Latin American plants in tribe Tristachyideae within the grass family. • Tristachya angustifolia Hitchc.

• Nayarit in western Mexico • Tristachya auronitens J.Duvign.
• Zaïre • Tristachya avenacea (J.Presl) Scribn. & Merr.
• Mexico, Central America • Tristachya bequaertii De Wild.
• Zaïre, Tanzania, Angola, Malawi, Zambia • Tristachya betsileensis A.Camus - Madagascar • Tristachya bicrinita (J.B.Phipps) Clayton - Tanzania, Zambia • Tristachya biseriata Stapf - Lesotho, Gauteng, Limpopo, Mpumalanga • Tristachya contrerasii R.Guzmán - Jalisco in western Mexico • Tristachya hubbardiana Conert - Zaïre, Tanzania, Angola, Zambia • Tristachya huillensis Rendle - Zaïre, Angola, Malawi, Zambia • Tristachya humbertii A.Camus - Madagascar • Tristachya laxa Scribn. & Merr.
• Mexico (Durango, Nayarit, Sinaloa) • Tristachya leiostachya Nees - Paraguay, Brazil • Tristachya leucothrix Trin. ex Nees - central + southern Africa • Tristachya lualabaensis (De Wild.) J.B.Phipps - central + southern Africa • Tristachya nodiglumis K.Schum.
• central + southern Africa • Tristachya papilosa R.Guzmán - Nayarit in western Mexico • Tristachya pedicellata Stent - Limpopo Province in South Africa • Tristachya rehmannii Hack.
• central + southern Africa • Tristachya superba (De Not.) Schweinf. & Asch.
• sub-Saharan Africa • Tristachya thollonii Franch.
• from Chad to Angola • Tristachya viridearistata (J.B.Phipps) Clayton - Tanzania, Zambia, Burundi see Danthoniopsis Dilophotriche Loudetia Loudetiopsis Trichopteryx Zonotriche • Tristachya anthoxanthoides - Loudetia vanderystii • Tristachya arundinacea - Loudetia arundinacea • Tristachya aurea - Zonotriche inamoena • Tristachya barbata - Danthoniopsis barbata • Tristachya bricchettiana - Danthoniopsis barbata • Tristachya chevalieri - Loudetiopsis chevalieri • Tristachya chrysothrix - Loudetiopsis chrysothrix • Tristachya coarctata - Loudetiopsis coarctata • Tristachya decora - Zonotriche decora • Tristachya dregeana - Trichopteryx dregeana • Tristachya elegans - Loudetia simplex • Tristachya esculenta - Loudetia esculenta • Tristachya fulva - Loudetiopsis chrysothrix • Tristachya glabrinodis - Loudetiopsis kerstingii • Tristachya inamoena - Zonotriche inamoena • Tristachya kagerensis - Loudetia kagerensis • Tristachya kerstingii - Loudetiopsis kerstingii • Tristachya microstachya - Dilophotriche tristachyoides • Tristachya minuta - Dilophotriche tristachyoides • Tristachya multinodis - Dilophotriche tristachyoides • Tristachya parviflora - Loudetiopsis ambiens • Tristachya pilgeriana - Zonotriche decora • Tristachya purpurea - Dilophotriche purpurea • Tristachya ringoetii - Zonotriche inamoena • Tristachya scaettae - Loudetiopsis scaettae • Tristachya simplex - Loudetia simplex • Tristachya somalensis - Danthoniopsis barbata • Tristachya stocksii - Danthoniopsis stocksii • Tristachya tristachyoides - Dilophotriche tristachyoides • Tristachya triticoides - Loudetia coarctata • Tristachya tuberculata - Dilophotriche tristachyoides