| canada | ontario | equisetum hyemale | species | 2 | 0 |
| canada | quebec | equisetum hyemale subsp. affine | subspecies | 1 | 0 |
| south korea | gangwon province | equisetum hyemale | species | 12 | 0 |
| south korea | north gyeongsang province | equisetum hyemale | species | 3 | 0 |
| united states | california | equisetum hyemale | species | 1 | 0 |
| united states | california | equisetum hyemale subsp. affine | subspecies | 2 | 0 |
| united states | north dakota | equisetum hyemale | species | 2 | 0 |
| united states | ohio | equisetum hyemale | species | 1 | 0 |
| united states | utah | equisetum hyemale | species | 2 | 0 |
| united states | utah | equisetum hyemale subsp. affine | subspecies | 1 | 0 |