| Label | Id | |
|---|---|---|
| Blarinella | 202265 | |
| Blasia | 122624 | |
| Blasiaceae | 122623 | |
| Blastocladiopsis | 2022636 | |
| Blera | 226146 | |
| Bouchardatia | 1226054 | |
| Boyeria | 126226 | |
| Brachydontium | 226500 | |
| Bradybaenidae | 83226 | |
| Brasiliogovea | 2267480 | |
| Brasilogovea | 2267480 | |
| Brevimetopia | 2269421 | |
| Brombya | 1226056 | |
| Brusqeulia | 2269371 | |
| Bryales | 3226 |