Uncinula macrospora
Encyclopedia
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
.
Powdery mildew
Powdery mildew is a fungal disease that affects a wide range of plants. Powdery mildew diseases are caused by many different species of fungi in the order Erysiphales. It is one of the easier diseases to spot, as its symptoms are quite distinctive. Infected plants display white powdery spots on the...
disease of certain North American trees. Its hosts include various elms (Ulmus spp.), hackberries (Celtis spp.), and American hop hornbeam Ostrya virginiana
Ostrya virginiana
Ostrya virginiana , is a species of Ostrya native to eastern North America, from Nova Scotia west to southern Manitoba and eastern Wyoming, southeast to northern Florida and southwest to eastern Texas and northeastern Mexico...
.