| Option ID | Family Name | Notes | Metadata ID |
| 381 | Tetramelaceae | Angiosperms (Flowering plants) | 1,591 |
| 382 | Tetrameristaceae | Angiosperms (Flowering plants) | 1,591 |
| 383 | Theaceae | Angiosperms (Flowering plants) | 1,591 |
| 384 | Thomandersiaceae | Angiosperms (Flowering plants) | 1,591 |
| 385 | Thurniaceae | Angiosperms (Flowering plants) | 1,591 |
| 386 | Thymelaeaceae | Angiosperms (Flowering plants) | 1,591 |
| 387 | Ticodendraceae | Angiosperms (Flowering plants) | 1,591 |
| 388 | Tofieldiaceae | Angiosperms (Flowering plants) | 1,591 |
| 389 | Torricelliaceae | Angiosperms (Flowering plants) | 1,591 |
| 390 | Tovariaceae | Angiosperms (Flowering plants) | 1,591 |
| 391 | Trigoniaceae | Angiosperms (Flowering plants) | 1,591 |
| 392 | Trimeniaceae | Angiosperms (Flowering plants) | 1,591 |
| 393 | Triuridaceae | Angiosperms (Flowering plants) | 1,591 |
| 394 | Trochodendraceae | Angiosperms (Flowering plants) | 1,591 |
| 395 | Tropaeolaceae | Angiosperms (Flowering plants) | 1,591 |
| 396 | Typhaceae | Angiosperms (Flowering plants) | 1,591 |
| 397 | Ulmaceae | Angiosperms (Flowering plants) | 1,591 |
| 398 | Urticaceae | Angiosperms (Flowering plants) | 1,591 |
| 399 | Vahliaceae | Angiosperms (Flowering plants) | 1,591 |
| 400 | Velloziaceae | Angiosperms (Flowering plants) | 1,591 |