| Kingdom: Fungi |
| Phylum: Ascomycota |
| Subphylum: Pezizomycotina |
| Class: Sordariomycetes |
| Subclass: Sordariomycetidae |
| Order: Diaporthales |
| Family: Valsaceae |
| Genus: Discula |
| Subject: Discula destructiva Redlin |
| Kingdom: Plantae |
| Phylum: Magnoliophyta |
| Class: Magnoliopsida |
| Subclass: Rosidae |
| Order: Cornales |
| Family: Cornaceae |
| Genus: Cornus |
| Subject: Cornus florida L. |