| 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 cordata Mill., 1768 |
| Tilia floridana Small, 1903 |
| Tilia heterophylla Vent., 1803 |
| Tilia houghii Rose, 1905 |
| Tilia longipes Bush, 1929 |
| Tilia mexicana Schltdl., 1837 |
| Tilia occidentalis Rose, 1905 |
| Tilioideae Arn., 1832 |
| Trichospermum Blume, 1825 |
| Trichospermum galeottii (Turcz.) Kosterm., 1962 |