| Name | Children | Media (from resource) | Traits |
|---|---|---|---|
| Coltivirus | 0 | 2 | 0 |
| Coprococcus eutactus | 0 | 1 | 0 |
| Coquillettida | 0 | 1 | 0 |
| Coquillettidia | 0 | 2 | 0 |
| Cornus florida L. (Cornouiller à fleurs) | 0 | 6 | 0 |
| Coronaviridae | 0 | 3 | 0 |
| Corynebacterium | 0 | 2 | 0 |
| Corynebacterium diphtheriae | 0 | 1 | 0 |
| Corynespora cassiicola (Berk. & M. A. Curtis) C. T. Wei 1950 | 0 | 6 | 0 |
| Cotinis mutabilis (Gory & Percheron 1833) | 0 | 30 | 0 |
| Crotalus adamanteus Palisot de Beauvois 1799 (Crotale diamantin) | 0 | 2 | 0 |
| Crotalus atrox Baird & Girard 1853 | 0 | 1 | 0 |
| Crotalus horridus Linnaeus 1758 (Crotale des bois) | 0 | 2 | 0 |
| Crotalus lepidus lepidus (Kennicott 1861) | 0 | 1 | 0 |
| Crotalus molossus molossus Baird & Girard 1853 | 0 | 1 | 0 |
