| canada | | equisetum arvense | species | 3 | 0 |
| canada | british columbia | equisetum telmateia | species | 2 | 0 |
| canada | newfoundland and labrador | equisetum sylvaticum | species | 1 | 0 |
| canada | northwest territories | equisetum arvense subsp. alpestre | subspecies | 7 | 0 |
| canada | northwest territories | equisetum arvense subsp. arvense | subspecies | 1 | 0 |
| canada | northwest territories | equisetum fluviatile | species | 2 | 0 |
| canada | northwest territories | equisetum palustre | species | 3 | 0 |
| canada | northwest territories | equisetum scirpoides | species | 5 | 0 |
| canada | northwest territories | equisetum sylvaticum | species | 2 | 0 |
| canada | northwest territories | equisetum variegatum | species | 4 | 0 |
| canada | nunavut | equisetum arvense subsp. alpestre | subspecies | 13 | 0 |
| canada | nunavut | equisetum fluviatile | species | 1 | 0 |
| canada | nunavut | equisetum scirpoides | species | 1 | 0 |
| canada | nunavut | equisetum variegatum | species | 15 | 0 |
| canada | ontario | equisetum arvense | species | 4 | 0 |
| canada | ontario | equisetum fluviatile | species | 2 | 0 |
| canada | ontario | equisetum hyemale | species | 2 | 0 |
| canada | ontario | equisetum laevigatum | species | 2 | 0 |
| canada | ontario | equisetum pratense | species | 1 | 0 |
| canada | ontario | equisetum scirpoides | species | 3 | 0 |
| canada | ontario | equisetum sylvaticum | species | 2 | 0 |
| canada | ontario | equisetum variegatum | species | 1 | 0 |
| canada | quebec | equisetum arvense | species | 4 | 0 |
| canada | quebec | equisetum fluviatile | species | 1 | 0 |
| canada | quebec | equisetum hyemale subsp. affine | subspecies | 1 | 0 |
| canada | quebec | equisetum pratense | species | 1 | 0 |
| canada | quebec | equisetum sylvaticum | species | 2 | 0 |
| canada | quebec | equisetum variegatum | species | 1 | 0 |
| canada | yukon | equisetum variegatum | species | 1 | 0 |
| china | | equisetum arvense | species | 1 | 0 |
| colombia | | equisetum bogotense | species | 10 | 0 |
| colombia | | equisetum giganteum | species | 5 | 0 |
| denmark | | equisetum telmateia | species | 1 | 0 |
| egypt | | equisetum ramosissimum | species | 1 | 0 |
| finland | | equisetum sylvaticum | species | 1 | 0 |
| france | | equisetum sylvaticum | species | 1 | 0 |
| france | rhone-alpes region | equisetum ramosissimum | species | 1 | 0 |
| germany | | equisetum arvense | species | 5 | 0 |
| germany | | equisetum palustre | species | 8 | 0 |
| greenland | | equisetum arvense | species | 4 | 0 |
| greenland | | equisetum variegatum | species | 4 | 0 |
| india | | equisetum ramosissimum subsp. debile | subspecies | 2 | 0 |
| japan | | equisetum fluviatile | species | 1 | 0 |
| japan | | equisetum palustre | species | 1 | 0 |
| japan | | equisetum scirpoides | species | 1 | 0 |
| japan | | equisetum variegatum | species | 1 | 0 |
| malaysia | | equisetum ramosissimum subsp. debile | subspecies | 1 | 0 |
| mexico | puebla | equisetum myriochaetum | species | 1 | 0 |
| south korea | | equisetum arvense | species | 1 | 0 |
| south korea | gangwon province | equisetum hyemale | species | 12 | 0 |
| south korea | north gyeongsang province | equisetum hyemale | species | 3 | 0 |
| sweden | | equisetum arvense | species | 13 | 0 |
| switzerland | | equisetum arvense | species | 1 | 0 |
| switzerland | geneva region | equisetum arvense | species | 1 | 0 |
| united kingdom | | equisetum fluviatile | species | 2 | 0 |
| united kingdom | scotland | equisetum fluviatile | species | 1 | 0 |
| united states | alaska | equisetum variegatum | species | 2 | 0 |
| united states | california | equisetum hyemale | species | 1 | 0 |
| united states | california | equisetum hyemale subsp. affine | subspecies | 2 | 0 |
| united states | california | equisetum scirpoides | species | 1 | 0 |
| united states | california | equisetum telmateia | species | 1 | 0 |
| united states | california | equisetum variegatum | species | 1 | 0 |
| united states | california | equisetum x ferrissii | species | 1 | 0 |
| united states | north dakota | equisetum arvense | species | 1 | 0 |
| united states | north dakota | equisetum fluviatile | species | 2 | 0 |
| united states | north dakota | equisetum hyemale | species | 2 | 0 |
| united states | north dakota | equisetum laevigatum | species | 3 | 0 |
| united states | north dakota | equisetum pratense | species | 1 | 0 |
| united states | ohio | equisetum hyemale | species | 1 | 0 |
| united states | utah | equisetum arvense | species | 2 | 0 |
| united states | utah | equisetum hyemale | species | 2 | 0 |
| united states | utah | equisetum hyemale subsp. affine | subspecies | 1 | 0 |
| united states | utah | equisetum laevigatum | species | 3 | 0 |
| united states | wisconsin | equisetum arvense | species | 3 | 0 |
| united states | wisconsin | equisetum pratense | species | 2 | 0 |
| united states | wisconsin | equisetum scirpoides | species | 2 | 0 |
| united states | wisconsin | equisetum sylvaticum | species | 4 | 0 |