| belgium | | phytophthora alni subsp. uniformis | subspecies | 5 | 0 |
| denmark | | phytophthora alni subsp. uniformis | subspecies | 6 | 0 |
| france | | phytophthora alni subsp. uniformis | subspecies | 14 | 0 |
| germany | | phytophthora alni subsp. uniformis | subspecies | 12 | 0 |
| hungary | | phytophthora alni subsp. uniformis | subspecies | 6 | 0 |
| ireland | | phytophthora alni subsp. uniformis | subspecies | 1 | 0 |
| italy | | phytophthora alni subsp. uniformis | subspecies | 5 | 0 |
| lithuania | | phytophthora alni subsp. uniformis | subspecies | 1 | 0 |
| norway | | phytophthora alni subsp. uniformis | subspecies | 5 | 0 |
| sweden | | phytophthora alni subsp. uniformis | subspecies | 15 | 0 |
| united states | alaska | phytophthora alni subsp. uniformis | subspecies | 10 | 0 |
| united states | oregon | phytophthora alni subsp. uniformis | subspecies | 2 | 0 |
| united states | washington | phytophthora alni subsp. uniformis | subspecies | 4 | 0 |