| Theobroma guazuma L., 1753 |
| Theobroma mammosum Cuatrec. & J. León, 1949 |
| Theobroma simiarum Donn. Sm., 1898 |
| Theobromateae (J. Agardh) A. Stahl, 1884 |
| Thespesia Sol. ex Corrêa, 1807 |
| Thespesia populnea (L.) Sol. ex Corrêa, 1807 |
| Tilia L., 1753 |
| Tilia ambigua Sarg. ex Bush, 1929 |
| Tilia americana L., 1753 |
| Tilia americana var. caroliniana (Mill.) Castigl., 1790 |
| Tilia americana var. mexicana (Schltdl.) Hardin, 1990 |
| Tilia caroliniana Mill., 1768 |
| Tilia caroliniana subsp. floridana (Small) A.E. Murray, 1984 |
| Tilia caroliniana subsp. occidentalis (Rose) Pigott, 2012 |
| Tilia floridana Small, 1903 |
| Tilia heterophylla Vent., 1803 |
| Tilia houghii Rose, 1905 |
| Tilia longipes Bush, 1929 |
| Tilia mexicana Schltdl., 1837 |
| Tilia occidentalis Rose, 1905 |