| canada | | equisetum arvense | species | 3 | 0 |
| canada | northwest territories | equisetum arvense subsp. alpestre | subspecies | 7 | 0 |
| canada | northwest territories | equisetum arvense subsp. arvense | subspecies | 1 | 0 |
| canada | nunavut | equisetum arvense subsp. alpestre | subspecies | 13 | 0 |
| canada | ontario | equisetum arvense | species | 4 | 0 |
| canada | quebec | equisetum arvense | species | 4 | 0 |
| china | | equisetum arvense | species | 1 | 0 |
| germany | | equisetum arvense | species | 5 | 0 |
| greenland | | equisetum arvense | species | 4 | 0 |
| south korea | | equisetum arvense | species | 1 | 0 |
| sweden | | equisetum arvense | species | 13 | 0 |
| switzerland | | equisetum arvense | species | 1 | 0 |
| switzerland | geneva region | equisetum arvense | species | 1 | 0 |
| united states | north dakota | equisetum arvense | species | 1 | 0 |
| united states | utah | equisetum arvense | species | 2 | 0 |
| united states | wisconsin | equisetum arvense | species | 3 | 0 |