| Genus | Species Num | Strain Num | SOURCE |
|---|---|---|---|
| Croceibacter | 1 | 1 | HMP |
| Crocosphaera | 3 | 3 | HMP |
| Cronobacter | 3 | 4 | HMP/MGYG |
| Cryptobacterium | 1 | 1 | HMP |
| Cupriavidus | 3 | 3 | HMP/MGYG |
| Cutibacterium | 3 | 7 | HMP/MGYG |
| Cyanobium | 1 | 1 | HMP |
| Cylindrospermopsis | 1 | 1 | HMP |
| Cytophaga | 1 | 1 | HMP |
| Dakarella | 1 | 1 | MGYG |