| Telanthophora liebmannii (Buchinger ex Klatt) H. Rob. & Brettell, 1974 |
| Telanthophora orcuttii (Greenm.) H. Rob. & Brettell, 1974 |
| Telanthophora serraquitchensis (Greenm.) H. Rob. & Brettell, 1974 |
| Telanthophora standleyi (Greenm.) H. Rob. & Brettell, 1974 |
| Telanthophora uspantanensis (J.M. Coult.) H. Rob. & Brettell, 1974 |
| Telesia Raf., 1837 |
| Telesia aurea (D. Don) Raf., 1836 |
| Tenorea Colla, 1824 |
| Tenorea berteroi Colla, 1824 |
| Tenorea calyculata Bertol. ex Colla, 1824 |
| Tepion Adans., 1763 |
| Tessaria Ruiz & Pav., 1794 |
| Tessaria sericea (Nutt.) Shinners, 1967 |
| Tetracanthus A. Rich., 1850 |
| Tetracarpum Moench, 1802 |
| Tetracarpum guatemalense Rydb., 1914 |
| Tetracarpum pringlei (S. Watson) Rydb., 1914 |
| Tetracarpum virgatum Rydb., 1914 |
| Tetracarpum wislizeni (A. Gray) Rydb., 1914 |
| Tetrachyron Schltdl., 1847 |