Elsinoë pyri

Elsinoë pyri is a species of fungus in the family Elsinoaceae. It is a plant pathogen that grows on apple (Pyrus malus). First described scientifically by Nikolai Nikolaevich Woronichin in 1914 as a species of Plectodiscella, the fungus was transferred to the genus Elsinoë by American mycologist Anna Eliza Jenkins in 1932.