| australia | | ceratophyllum demersum | species | 4 | 0 |
| australia | northern territory | ceratophyllum muricatum subsp. muricatum | subspecies | 1 | 0 |
| australia | queensland | ceratophyllum demersum | species | 1 | 0 |
| benin | mono department | ceratophyllum demersum | species | 9 | 0 |
| canada | british columbia | ceratophyllum demersum | species | 1 | 0 |
| canada | british columbia | ceratophyllum echinatum | species | 3 | 0 |
| canada | yukon | ceratophyllum demersum | species | 3 | 0 |
| china | | ceratophyllum demersum | species | 2 | 0 |
| china | zhejiang | ceratophyllum demersum | species | 44 | 0 |
| denmark | | ceratophyllum demersum | species | 1 | 0 |
| denmark | | ceratophyllum submersum | species | 1 | 0 |
| germany | | ceratophyllum demersum | species | 1 | 0 |
| germany | berlin | ceratophyllum demersum | species | 0 | 1 |
| italy | | ceratophyllum demersum | species | 1 | 0 |
| japan | aichi prefecture | ceratophyllum demersum | species | 3 | 0 |
| portugal | | ceratophyllum demersum | species | 2 | 0 |
| russia | astrakhan oblast | ceratophyllum muricatum subsp. kossinskyi | subspecies | 9 | 0 |
| russia | volgograd oblast | ceratophyllum submersum | species | 37 | 0 |
| south africa | | ceratophyllum demersum | species | 1 | 0 |
| thailand | | ceratophyllum demersum | species | 1 | 0 |
| united kingdom | | ceratophyllum submersum | species | 1 | 0 |
| united states | | ceratophyllum demersum | species | 6 | 0 |
| united states | arizona | ceratophyllum demersum | species | 1 | 0 |
| united states | connecticut | ceratophyllum demersum | species | 1 | 0 |
| united states | connecticut | ceratophyllum echinatum | species | 3 | 0 |
| united states | indiana | ceratophyllum echinatum | species | 2 | 0 |
| united states | north dakota | ceratophyllum demersum | species | 3 | 0 |
| united states | south carolina | ceratophyllum demersum | species | 1 | 0 |
| united states | texas | ceratophyllum demersum | species | 1 | 0 |
| united states | utah | ceratophyllum demersum | species | 1 | 0 |