| botswana | | uncultured clostridia bacterium | species | 18 | 0 |
| brazil | | uncultured clostridia bacterium | species | 5 | 0 |
| brazil | sao paulo | uncultured clostridia bacterium | species | 1 | 0 |
| china | | uncultured clostridia bacterium | species | 29 | 0 |
| china | guangdong | uncultured clostridia bacterium | species | 2 | 0 |
| china | heilongjiang | uncultured clostridia bacterium | species | 1 | 0 |
| china | shanxi | uncultured clostridia bacterium | species | 1 | 0 |
| china | sichuan | uncultured clostridia bacterium | species | 1 | 0 |
| colombia | | uncultured clostridia bacterium | species | 2 | 0 |
| ethiopia | | uncultured clostridia bacterium | species | 2 | 0 |
| gabon | | uncultured clostridia bacterium | species | 4 | 0 |
| germany | | uncultured clostridia bacterium | species | 10 | 0 |
| india | | uncultured clostridia bacterium | species | 81 | 0 |
| ireland | | uncultured clostridia bacterium | species | 2 | 0 |
| italy | | uncultured clostridia bacterium | species | 2 | 0 |
| japan | | uncultured clostridia bacterium | species | 19 | 0 |
| japan | hokkaido prefecture | uncultured clostridia bacterium | species | 23 | 0 |
| japan | kanagawa prefecture | uncultured clostridia bacterium | species | 2 | 0 |
| malaysia | sabah | uncultured clostridia bacterium | species | 16 | 0 |
| mexico | | uncultured clostridia bacterium | species | 2 | 0 |
| portugal | | uncultured clostridia bacterium | species | 6 | 0 |
| russia | irkutsk oblast | uncultured clostridia bacterium | species | 5 | 0 |
| russia | novosibirsk oblast | uncultured clostridia bacterium | species | 1 | 0 |
| south africa | mpumalanga province | uncultured clostridia bacterium | species | 1 | 0 |
| spain | | uncultured clostridia bacterium | species | 12 | 0 |
| sweden | | uncultured clostridia bacterium | species | 1 | 0 |
| sweden | ostergoetland | uncultured clostridia bacterium | species | 2 | 0 |
| turkey | | uncultured clostridia bacterium | species | 6 | 0 |
| united kingdom | england | uncultured clostridia bacterium | species | 3 | 0 |
| united states | | uncultured clostridia bacterium | species | 19 | 0 |
| united states | alaska | uncultured clostridia bacterium | species | 21 | 0 |
| united states | california | uncultured clostridia bacterium | species | 1 | 0 |
| united states | florida | uncultured clostridia bacterium | species | 9 | 0 |
| united states | georgia | uncultured clostridia bacterium | species | 5 | 0 |
| united states | illinois | uncultured clostridia bacterium | species | 1 | 0 |
| united states | kansas | uncultured clostridia bacterium | species | 1 | 0 |
| united states | south carolina | uncultured clostridia bacterium | species | 2 | 0 |