| Genus | Species Num | Strain Num | SOURCE |
|---|---|---|---|
| Chlorobium | 4 | 5 | HMP |
| Chloroflexus | 2 | 3 | HMP |
| Chloroherpeton | 1 | 1 | HMP |
| Christensenella | 3 | 3 | MGYG |
| Chromobacterium | 1 | 1 | HMP |
| Chromohalobacter | 1 | 1 | HMP |
| Chryseobacterium | 2 | 2 | HMP/MGYG |
| Chthoniobacter | 1 | 1 | HMP |
| Citrifermentans | 1 | 1 | HMP |
| Citrobacter | 12 | 16 | HMP/MGYG |