| Kingdom: Fungi | 
| Phylum: Ascomycota | 
| Subphylum: Pezizomycotina | 
| Class: Dothideomycetes | 
| Subclass: Dothideomycetidae | 
| Order: Pleosporales | 
| Family: Pleosporaceae | 
| Genus: Alternaria | 
| Subject: Alternaria solani Sorauer | 
| Kingdom: Plantae | 
| Phylum: Magnoliophyta | 
| Class: Magnoliopsida | 
| Subclass: Asteridae | 
| Order: Solanales | 
| Family: Solanaceae | 
| Genus: Solanum | 
| Subject: Solanum tuberosum L. |