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


4 Images

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”).


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”).


Paul Bachi
University of Kentucky Research and Education Center

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


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.