| Torulinium macrocephalum var. macrocephalum (Liebm.) C.B. Clarke, 1908 |
| Torulinium odoratum (L.) S.S. Hooper, 1972 |
| Trichelostylis P. Beauv. ex T. Lestib., 1819 |
| Trichelostylis complanata (Retz.) Nees, 1834 |
| Trichelostylis geminata Lindl. & Nees, 1842 |
| Trichelostylis mucronulatus (Michx.) Torr., 1836 |
| Trichelostylis rudgeana Nees, 1842 |
| Trichophoreae Lév.-Bourret & J.R. Starr, 2019 |
| Trichophorum Pers., 1805 |
| Trichophorum analecta (Beetle) Lév.-Bourret & J.R. Starr, 2019 |
| Trichophorum coahuilense (Svenson) Lév.-Bourret & J.R. Starr, 2019 |
| Trichophorum cyperinum (L.) Pers., 1805 |
| Trichophorum evadens (C.D. Adams) Lév.-Bourret & J.R. Starr, 2019 |
| Trichophyllum Ehrh., 1789 |
| Trichophyllum arenicola (Torr. ex Engelm. & Gray) House, 1920 |
| Trichophyllum atropurpureum (Retz.) House, 1920 |
| Trichophyllum maculosum (Vahl) House, 1920 |
| Trichophyllum ochreatum (Nees) House, 1920 |
| Tricostulariinae R.L. Barrett, K.L. Wilson & J.J. Bruhl, 2021 |
| Uncinia Pers., 1807 |