| Option ID | Family Name | Notes | Metadata ID |
| 261 | Nepenthaceae | Angiosperms (Flowering plants) | 1,591 |
| 262 | Neuradaceae | Angiosperms (Flowering plants) | 1,591 |
| 263 | Nitrariaceae | Angiosperms (Flowering plants) | 1,591 |
| 264 | Nothofagaceae | Angiosperms (Flowering plants) | 1,591 |
| 265 | Nyctaginaceae | Angiosperms (Flowering plants) | 1,591 |
| 266 | Nymphaeaceae | Angiosperms (Flowering plants) | 1,591 |
| 267 | Ochnaceae | Angiosperms (Flowering plants) | 1,591 |
| 268 | Olacaceae | Angiosperms (Flowering plants) | 1,591 |
| 269 | Oleaceae | Angiosperms (Flowering plants) | 1,591 |
| 270 | Onagraceae | Angiosperms (Flowering plants) | 1,591 |
| 271 | Oncothecaceae | Angiosperms (Flowering plants) | 1,591 |
| 272 | Opiliaceae | Angiosperms (Flowering plants) | 1,591 |
| 273 | Orchidaceae | Angiosperms (Flowering plants) | 1,591 |
| 274 | Orobanchaceae | Angiosperms (Flowering plants) | 1,591 |
| 275 | Oxalidaceae | Angiosperms (Flowering plants) | 1,591 |
| 276 | Paeoniaceae | Angiosperms (Flowering plants) | 1,591 |
| 277 | Pandaceae | Angiosperms (Flowering plants) | 1,591 |
| 278 | Pandanaceae | Angiosperms (Flowering plants) | 1,591 |
| 279 | Papaveraceae | Angiosperms (Flowering plants) | 1,591 |
| 280 | Paracryphiaceae | Angiosperms (Flowering plants) | 1,591 |