| canada | | melampsora medusae | species | 1 | 0 |
| canada | | melampsora medusae f. sp. tremuloides | no rank | 2 | 0 |
| canada | alberta | melampsora medusae f. sp. deltoidis | no rank | 3 | 0 |
| canada | british columbia | melampsora medusae | species | 1 | 0 |
| canada | british columbia | melampsora medusae f. sp. tremuloides | no rank | 4 | 0 |
| canada | new brunswick | melampsora medusae f. sp. tremuloides | no rank | 8 | 0 |
| canada | ontario | melampsora medusae | species | 1 | 0 |
| canada | ontario | melampsora medusae f. sp. deltoidis | no rank | 7 | 0 |
| canada | prince edward island | melampsora medusae f. sp. tremuloides | no rank | 3 | 0 |
| canada | quebec | melampsora medusae | species | 7 | 0 |
| canada | quebec | melampsora medusae f. sp. deltoidis | no rank | 7534 | 0 |
| canada | quebec | melampsora medusae f. sp. tremuloides | no rank | 99 | 0 |
| chile | araucania region | melampsora medusae | species | 6 | 0 |
| china | | melampsora medusae | species | 1 | 0 |
| china | shaanxi | melampsora medusae | species | 1 | 0 |
| china | sichuan | melampsora medusae | species | 4 | 0 |
| france | | melampsora medusae | species | 1 | 0 |
| france | | melampsora medusae f. sp. deltoidis | no rank | 1 | 0 |
| france | aquitaine region | melampsora medusae | species | 2 | 0 |
| france | aquitaine region | melampsora medusae f. sp. deltoidis | no rank | 2 | 0 |
| france | lorraine region | melampsora medusae f. sp. deltoidis | no rank | 1 | 0 |
| france | midi-pyrenees region | melampsora medusae f. sp. deltoidis | no rank | 5 | 0 |
| mexico | baja california | melampsora medusae | species | 1 | 0 |
| south africa | | melampsora medusae f. sp. deltoidis | no rank | 9 | 0 |
| united states | california | melampsora medusae | species | 1 | 0 |
| united states | iowa | melampsora medusae f. sp. deltoidis | no rank | 12 | 0 |
| united states | louisiana | melampsora medusae | species | 1 | 0 |
| united states | minnesota | melampsora medusae | species | 1 | 0 |
| united states | mississippi | melampsora medusae f. sp. deltoidis | no rank | 20 | 0 |
| united states | missouri | melampsora medusae f. sp. deltoidis | no rank | 15 | 0 |
| united states | north dakota | melampsora medusae f. sp. deltoidis | no rank | 4 | 0 |
| united states | oklahoma | melampsora medusae f. sp. deltoidis | no rank | 14 | 0 |
| united states | wisconsin | melampsora medusae f. sp. deltoidis | no rank | 14 | 0 |
| united states | wisconsin | melampsora medusae f. sp. tremuloides | no rank | 6 | 0 |