| Kingdom: Fungi |
| Phylum: Ascomycota |
| Subphylum: Pezizomycotina |
| Class: Dothideomycetes |
| Subclass: Dothideomycetidae |
| Order: Pleosporales |
| Family: Venturiaceae |
| Genus: Venturia |
| Subject: Venturia inaequalis (Cooke) G. Wint. |
| Kingdom: Plantae |
| Phylum: Magnoliophyta |
| Class: Magnoliopsida |
| Subclass: Rosidae |
| Order: Rosales |
| Family: Rosaceae |
| Genus: Malus |
| Subject: Malus domestica Borkh. |