| Option ID | Family Name | Notes | Metadata ID |
| 101 | Combretaceae | Angiosperms (Flowering plants) | 1,591 |
| 102 | Commelinaceae | Angiosperms (Flowering plants) | 1,591 |
| 103 | Compositae | Angiosperms (Flowering plants) | 1,591 |
| 104 | Connaraceae | Angiosperms (Flowering plants) | 1,591 |
| 105 | Convolvulaceae | Angiosperms (Flowering plants) | 1,591 |
| 106 | Coriariaceae | Angiosperms (Flowering plants) | 1,591 |
| 107 | Cornaceae | Angiosperms (Flowering plants) | 1,591 |
| 108 | Corsiaceae | Angiosperms (Flowering plants) | 1,591 |
| 109 | Corynocarpaceae | Angiosperms (Flowering plants) | 1,591 |
| 110 | Costaceae | Angiosperms (Flowering plants) | 1,591 |
| 111 | Crassulaceae | Angiosperms (Flowering plants) | 1,591 |
| 112 | Crossosomataceae | Angiosperms (Flowering plants) | 1,591 |
| 113 | Ctenolophonaceae | Angiosperms (Flowering plants) | 1,591 |
| 114 | Cucurbitaceae | Angiosperms (Flowering plants) | 1,591 |
| 115 | Cunoniaceae | Angiosperms (Flowering plants) | 1,591 |
| 116 | Curtisiaceae | Angiosperms (Flowering plants) | 1,591 |
| 117 | Cyclanthaceae | Angiosperms (Flowering plants) | 1,591 |
| 118 | Cymodoceaceae | Angiosperms (Flowering plants) | 1,591 |
| 119 | Cynomoriaceae | Angiosperms (Flowering plants) | 1,591 |
| 120 | Cyperaceae | Angiosperms (Flowering plants) | 1,591 |