| Tintinnabularia gratissima J.F. Morales, 1996 |
| Tintinnabularia mortonii Woodson, 1936 |
| Tonduzia Pittier, 1908 |
| Tonduzia longifolia (A. DC.) Markgr., 1924 |
| Tonduzia macrantha Woodson, 1937 |
| Tonduzia parvifolia Pittier, 1908 |
| Tonduzia pittieri Donn. Sm., 1910 |
| Tonduzia stenophylla (Donn. Sm.) Pittier, 1908 |
| Tonduziinae M.E. Endress, 2014 |
| Trachelospermum Lem., 1851 |
| Trachelospermum difforme (Walter) A. Gray, 1878 |
| Trachelospermum stans A. Gray, 1886 |
| Trichosacme Zucc., 1846 |
| Trichosacme lanata Zucc., 1846 |
| Tylophorinae K. Schum., 1895 |
| Tympananthe Hassk., 1847 |
| Tympananthe suberosa Hassk., 1847 |
| Urechites Müll. Arg., 1860 |
| Urechites andrieuxii Müll. Arg., 1860 |
| Urechites karwinskii Müll. Arg., 1860 |