Powdery mildew

• French disease name: Blanc
• Pathogen name: Sawadaea bicornis (Wallr.) Homma
• Kingdom: Fungi
• Phylum: Ascomycota
• Class: Leotiomycetes
• Order: Helotiales
• Family: Erysiphaceae

Distribution

• British Columbia

Other information

Powdery white mycelium appears on leaf surface(s) in late summer and fall.

Canadian Forest Service Publications

Powdery mildew

Information on host(s)

Main host(s)

• Bigleaf maple

Photos

Uncinula bicornis on bigleaf maple

Al Funk