Powdery Mildew

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Powdery mildew (Sphaerotheca pannosa) infection on a peony leaf.  Sample was collected in late summer in New York State.  The balls are fruiting bodies of the fungus that will distribute the spores to more plants.
Powdery mildew (Sphaerotheca pannosa) infection on a peony leaf. Sample was collected in late summer in New York State. The balls are fruiting bodies of the fungus that will distribute the spores to more plants.
Filename: K09sem-mildew100.jpg
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