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Powdery mildew (Phyllactinia spp.) on Oak, red oak group (Quercus sp.)


4 Images
5368429
Paul Bachi
University of Kentucky Research and Education Center

Underside of infected leaves showing white fungal mycelium and many, black, sexual reproductive bodies of the fungus (“cleistothecia”).

5368430
Paul Bachi
University of Kentucky Research and Education Center

Close-up of the underside of infected leaf showing white fungal mycelium and many, black, sexual reproductive bodies of the fungus (“cleistothecia”).

5368428
Paul Bachi
University of Kentucky Research and Education Center

Sexual reproductive body of the fungus (“cleistothecium”) with characteristic bulbous base of appendages.

5368427
Paul Bachi
University of Kentucky Research and Education Center

Negative image of the sexual reproductive body of the fungus (“cleistothecium”) with characteristic bulbous base of appendages.