| canada | | drepanocladus angustifolius | species | 6 | 0 |
| finland | | drepanocladus angustifolius | species | 3 | 0 |
| greenland | | drepanocladus angustifolius | species | 3 | 0 |
| iceland | | drepanocladus angustifolius | species | 3 | 0 |
| norway | | drepanocladus angustifolius | species | 24 | 0 |
| sweden | | drepanocladus angustifolius | species | 56 | 0 |
| united states | | drepanocladus angustifolius | species | 15 | 0 |