| canada | | heterobasidion irregulare | species | 24 | 0 |
| canada | british columbia | heterobasidion irregulare | species | 3 | 0 |
| canada | ontario | heterobasidion irregulare | species | 185 | 0 |
| canada | quebec | heterobasidion irregulare | species | 2939 | 0 |
| greece | | heterobasidion irregulare | species | 2 | 0 |
| greece | attica region | heterobasidion irregulare tc 32-1 | no rank | 1 | 0 |
| italy | | heterobasidion irregulare | species | 36 | 0 |
| italy | lazio region | heterobasidion irregulare | species | 16 | 0 |
| united states | | heterobasidion irregulare | species | 21 | 0 |
| united states | california | heterobasidion irregulare | species | 24 | 0 |
| united states | colorado | heterobasidion irregulare | species | 3 | 0 |
| united states | connecticut | heterobasidion irregulare | species | 1 | 0 |
| united states | georgia | heterobasidion irregulare | species | 16 | 0 |
| united states | illinois | heterobasidion irregulare | species | 8 | 0 |
| united states | indiana | heterobasidion irregulare | species | 1 | 0 |
| united states | massachusetts | heterobasidion irregulare | species | 1 | 0 |
| united states | michigan | heterobasidion irregulare | species | 6 | 0 |
| united states | nebraska | heterobasidion irregulare | species | 5 | 0 |
| united states | new hampshire | heterobasidion irregulare | species | 8 | 0 |
| united states | new york | heterobasidion irregulare | species | 1 | 0 |
| united states | north carolina | heterobasidion irregulare | species | 357 | 0 |
| united states | pennsylvania | heterobasidion irregulare | species | 1 | 0 |
| united states | south carolina | heterobasidion irregulare | species | 5 | 0 |
| united states | vermont | heterobasidion irregulare | species | 1 | 0 |
| united states | vermont | heterobasidion irregulare tc 32-1 | no rank | 13306 | 0 |
| united states | virginia | heterobasidion irregulare | species | 1 | 0 |
| united states | washington | heterobasidion irregulare | species | 3 | 0 |
| united states | wisconsin | heterobasidion irregulare | species | 34 | 0 |