| Option ID | Family Name | Notes | Metadata ID |
| 501 | Calypogeiaceae | Bryophytes (Mosses and liverworts) | 1,594 |
| 502 | Catagoniaceae | Bryophytes (Mosses and liverworts) | 1,594 |
| 503 | Catoscopiaceae | Bryophytes (Mosses and liverworts) | 1,594 |
| 504 | Cephaloziaceae | Bryophytes (Mosses and liverworts) | 1,594 |
| 505 | Cephaloziellaceae | Bryophytes (Mosses and liverworts) | 1,594 |
| 506 | Chaetophyllopsaceae | Bryophytes (Mosses and liverworts) | 1,594 |
| 507 | Chonecoleaceae | Bryophytes (Mosses and liverworts) | 1,594 |
| 508 | Cinclidotaceae | Bryophytes (Mosses and liverworts) | 1,594 |
| 509 | Cleveaceae | Bryophytes (Mosses and liverworts) | 1,594 |
| 510 | Climaciaceae | Bryophytes (Mosses and liverworts) | 1,594 |
| 511 | Conocephalaceae | Bryophytes (Mosses and liverworts) | 1,594 |
| 512 | Corsiniaceae | Bryophytes (Mosses and liverworts) | 1,594 |
| 513 | Cryphaeaceae | Bryophytes (Mosses and liverworts) | 1,594 |
| 514 | Cyrtopodaceae | Bryophytes (Mosses and liverworts) | 1,594 |
| 515 | Daltoniaceae | Bryophytes (Mosses and liverworts) | 1,594 |
| 516 | Dendrocerotaceae | Bryophytes (Mosses and liverworts) | 1,594 |
| 517 | Dicnemonaceae | Bryophytes (Mosses and liverworts) | 1,594 |
| 518 | Dicranaceae | Bryophytes (Mosses and liverworts) | 1,594 |
| 519 | Diphysciaceae | Bryophytes (Mosses and liverworts) | 1,594 |
| 520 | Disceliaceae | Bryophytes (Mosses and liverworts) | 1,594 |