| Kingdom: Fungi |
| Phylum: Ascomycota |
| Subphylum: Pezizomycotina |
| Class: Dothideomycetes |
| Subclass: Dothideomycetidae |
| Order: Capnodiales |
| Family: Mycosphaerellaceae |
| Genus: Cercospora |
| Subject: Cercospora medicaginis Ellis & Everh. |
| Kingdom: Plantae |
| Phylum: Magnoliophyta |
| Class: Magnoliopsida |
| Subclass: Rosidae |
| Order: Fabales |
| Family: Fabaceae |
| Subfamily: Faboideae |
| Tribe: Trifolieae |
| Genus: Medicago |
| Subject: Medicago sativa L. |