| Option ID | Family Name | Notes | Metadata ID |
| 321 | Proteaceae | Angiosperms (Flowering plants) | 1,591 |
| 322 | Putranjivaceae | Angiosperms (Flowering plants) | 1,591 |
| 323 | Quillajaceae | Angiosperms (Flowering plants) | 1,591 |
| 324 | Rafflesiaceae | Angiosperms (Flowering plants) | 1,591 |
| 325 | Ranunculaceae | Angiosperms (Flowering plants) | 1,591 |
| 326 | Rapateaceae | Angiosperms (Flowering plants) | 1,591 |
| 327 | Resedaceae | Angiosperms (Flowering plants) | 1,591 |
| 328 | Restionaceae | Angiosperms (Flowering plants) | 1,591 |
| 329 | Rhabdodendraceae | Angiosperms (Flowering plants) | 1,591 |
| 330 | Rhamnaceae | Angiosperms (Flowering plants) | 1,591 |
| 331 | Rhipogonaceae | Angiosperms (Flowering plants) | 1,591 |
| 332 | Rhizophoraceae | Angiosperms (Flowering plants) | 1,591 |
| 333 | Roridulaceae | Angiosperms (Flowering plants) | 1,591 |
| 334 | Rosaceae | Angiosperms (Flowering plants) | 1,591 |
| 335 | Rousseaceae | Angiosperms (Flowering plants) | 1,591 |
| 336 | Rubiaceae | Angiosperms (Flowering plants) | 1,591 |
| 337 | Ruppiaceae | Angiosperms (Flowering plants) | 1,591 |
| 338 | Rutaceae | Angiosperms (Flowering plants) | 1,591 |
| 339 | Sabiaceae | Angiosperms (Flowering plants) | 1,591 |
| 340 | Salicaceae | Angiosperms (Flowering plants) | 1,591 |