| argentina | catamarca province | uncultured xanthobacter sp. | species | 2 | 0 |
| china | | uncultured xanthobacter sp. | species | 1 | 0 |
| china | hunan | uncultured xanthobacter sp. | species | 3 | 0 |
| italy | tuscany region | uncultured xanthobacter sp. | species | 2 | 0 |
| japan | shizuoka prefecture | uncultured xanthobacter sp. | species | 30 | 0 |
| mexico | | uncultured xanthobacter sp. | species | 1 | 0 |
| netherlands | gelderland province | uncultured xanthobacter sp. | species | 1 | 0 |
| poland | lower silesia province | uncultured xanthobacter sp. | species | 1 | 0 |
| spain | | uncultured xanthobacter sp. | species | 1 | 0 |
| united states | | uncultured xanthobacter sp. | species | 1 | 0 |