| china | | uncultured pseudanabaena sp. | species | 2 | 0 |
| french polynesia | windward islands | uncultured pseudanabaena sp. | species | 1 | 0 |
| mexico | | uncultured pseudanabaena sp. | species | 4 | 0 |
| spain | madrid | uncultured pseudanabaena sp. | species | 16 | 0 |
| united states | | uncultured pseudanabaena sp. | species | 6 | 0 |