| Option ID | Family Name | Notes | Metadata ID |
| 21 | Anisophylleaceae | Angiosperms (Flowering plants) | 1,591 |
| 22 | Annonaceae | Angiosperms (Flowering plants) | 1,591 |
| 23 | Aphanopetalaceae | Angiosperms (Flowering plants) | 1,591 |
| 24 | Aphloiaceae | Angiosperms (Flowering plants) | 1,591 |
| 25 | Apiaceae | Angiosperms (Flowering plants) | 1,591 |
| 26 | Apocynaceae | Angiosperms (Flowering plants) | 1,591 |
| 27 | Apodanthaceae | Angiosperms (Flowering plants) | 1,591 |
| 28 | Aponogetonaceae | Angiosperms (Flowering plants) | 1,591 |
| 29 | Aquifoliaceae | Angiosperms (Flowering plants) | 1,591 |
| 30 | Araceae | Angiosperms (Flowering plants) | 1,591 |
| 31 | Araliaceae | Angiosperms (Flowering plants) | 1,591 |
| 32 | Arecaceae | Angiosperms (Flowering plants) | 1,591 |
| 33 | Argophyllaceae | Angiosperms (Flowering plants) | 1,591 |
| 34 | Aristolochiaceae | Angiosperms (Flowering plants) | 1,591 |
| 35 | Asparagaceae | Angiosperms (Flowering plants) | 1,591 |
| 36 | Asteliaceae | Angiosperms (Flowering plants) | 1,591 |
| 37 | Asteropeiaceae | Angiosperms (Flowering plants) | 1,591 |
| 38 | Atherospermataceae | Angiosperms (Flowering plants) | 1,591 |
| 39 | Austrobaileyaceae | Angiosperms (Flowering plants) | 1,591 |
| 40 | Balanopaceae | Angiosperms (Flowering plants) | 1,591 |