| Trimmatostroma betulinum (Corda) S. Hughes, 1953 |
| Trimmatostroma cordae N. D. Sharma & S. R. Singh, 1976 |
| Trimmatostroma scutellare (Berk. & Broome) M. B. Ellis, 1976 |
| Triramulispora Matsush., 1975 |
| Triramulispora gracilis Matsush., 1975 |
| Trivettea Bertsch, 2014 |
| Trivettea papalotla (Bertsch, Valdés & Gosliner, 2009) |
| Uberispora Piroz. & Hodges, 1973 |
| Uberispora simplex (Ichinoe) Piroz. & Hodges, 1973 |
| Uraecium Arthur, 1933 |
| Uraecium extensum (Arthur) Cummins, 1956 |
| Uredo Pers., 1801 |
| Uredo clavo J. F. Hennen & J. W. McCain, 1994 |
| Uredo crusa J. F. Hennen & J. W. McCain, 1994 |
| Uredo erythrinae Henn., 1908 |
| Uredo lippiae Dietel & Holw., 1901 |
| Uredo nidularii Henn., 1898 |
| Uredo scabies Cooke, 1886 |
| Uredo unilateralis Arthur, 1918 |
| Uredo velata Ellis & Everh., 1895 |