''Cercospora coryli'' is a
fungal
A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from th ...
plant pathogen.
References
coryli
Fungal plant pathogens and diseases
{{fungus-plant-disease-stub