| canada | manitoba | mertensia maritima | species | 3 | 0 |
| canada | northwest territories | mertensia maritima | species | 1 | 0 |
| canada | northwest territories | mertensia maritima subsp. tenella | subspecies | 4 | 0 |
| canada | nova scotia | mertensia maritima | species | 1 | 0 |
| canada | nunavut | mertensia maritima subsp. tenella | subspecies | 2 | 0 |
| canada | quebec | mertensia maritima | species | 1 | 0 |
| united kingdom | | mertensia maritima | species | 2 | 0 |