| Kingdom: Fungi | 
| Phylum: Ascomycota | 
| Subphylum: Pezizomycotina | 
| Class: Sordariomycetes | 
| Subclass: Sordariomycetidae | 
| Order: Diaporthales | 
| Family: Incertae sedis | 
| Genus: Cryphonectria | 
| Subject: Cryphonectria parasitica (Murrill) M.E. Barr | 
| Kingdom: Plantae | 
| Phylum: Magnoliophyta | 
| Class: Magnoliopsida | 
| Subclass: Hamamelidae | 
| Order: Fagales | 
| Family: Fagaceae | 
| Genus: Castanea | 
| Subject: Castanea sativa P. Mill. |