Uncinula macrospora

Uncinula macrospora is a plant pathogen that causes a powdery mildew disease of certain North American trees. Its hosts include various elms (Ulmus spp.), hackberries (Celtis spp.), and American hop hornbeam Ostrya virginiana.

Uncinula macrospora
Scientific classification
Kingdom:	Fungi
Division:	Ascomycota
Class:	Leotiomycetes
Order:	Erysiphales
Family:	Erysiphaceae
Genus:	Uncinula
Species:	U. macrospora
Binomial name
Uncinula macrospora Peck (1872)
Synonyms
Uncinula intermedia Berk. & M.A. Curtis (1876)