| Label | Id | |
|---|---|---|
| Nymphaea | 4418 | |
| Nymphaeaceae | 4410 | |
| Oar | 1441487 | |
| Odontocolon | 144415 | |
| Oligomerus | 441291 | |
| Omaliomimus | 441293 | |
| Ontsira | 144417 | |
| Oreomelissa | 444418 | |
| Ornithidium | 694410 | |
| Orphilus | 441295 | |
| Orthochtha | 1034416 | |
| Oxynoe | 382441 | |
| Ozius | 689441 | |
| Pachyella | 44111 | |
| Pachyphlegyas | 2813441 |