| Option ID | Family Name | Notes | Metadata ID |
| 301 | Physenaceae | Angiosperms (Flowering plants) | 1,591 |
| 302 | Phytolaccaceae | Angiosperms (Flowering plants) | 1,591 |
| 303 | Picramniaceae | Angiosperms (Flowering plants) | 1,591 |
| 304 | Picrodendraceae | Angiosperms (Flowering plants) | 1,591 |
| 305 | Piperaceae | Angiosperms (Flowering plants) | 1,591 |
| 306 | Pittosporaceae | Angiosperms (Flowering plants) | 1,591 |
| 307 | Plantaginaceae | Angiosperms (Flowering plants) | 1,591 |
| 308 | Platanaceae | Angiosperms (Flowering plants) | 1,591 |
| 309 | Plocospermataceae | Angiosperms (Flowering plants) | 1,591 |
| 310 | Plumbaginaceae | Angiosperms (Flowering plants) | 1,591 |
| 311 | Poaceae | Angiosperms (Flowering plants) | 1,591 |
| 312 | Podostemaceae | Angiosperms (Flowering plants) | 1,591 |
| 313 | Polemoniaceae | Angiosperms (Flowering plants) | 1,591 |
| 314 | Polygalaceae | Angiosperms (Flowering plants) | 1,591 |
| 315 | Polygonaceae | Angiosperms (Flowering plants) | 1,591 |
| 316 | Pontederiaceae | Angiosperms (Flowering plants) | 1,591 |
| 317 | Portulacaceae | Angiosperms (Flowering plants) | 1,591 |
| 318 | Posidoniaceae | Angiosperms (Flowering plants) | 1,591 |
| 319 | Potamogetonaceae | Angiosperms (Flowering plants) | 1,591 |
| 320 | Primulaceae | Angiosperms (Flowering plants) | 1,591 |