| canada | ontario | carex flacca | species | 1 | 0 |
| france | | carex flacca | species | 2 | 0 |
| germany | | carex flacca | species | 1 | 0 |
| germany | bavaria | carex flacca | species | 16 | 0 |
| italy | | carex flacca subsp. erythrostachys | subspecies | 1 | 0 |
| italy | tuscany region | carex flacca subsp. flacca | subspecies | 2 | 0 |
| spain | balearic islands | carex flacca subsp. erythrostachys | subspecies | 3 | 0 |
| switzerland | geneva region | carex flacca | species | 2 | 0 |
| united kingdom | | carex flacca | species | 5 | 0 |
| united states | california | carex flacca | species | 1 | 0 |