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Caption: Begonia powdery mildew
Photo by: R.S. Byther
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Caption: Powdery mildew on leucothoe
Photo by: C.R. Foss
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Caption: Powdery mildew on photinia
Photo by: R.S. Byther
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Caption: Powdery mildew on leaves
Photo by: R.S. Byther
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Caption: Powdery mildew on rhododendron
Photo by: C.R. Foss
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Caption: Powdery mildew on rose stems and buds
Photo by: R.S. Byther
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Caption: Powdery mildew on rose leaves
Photo by: R.S. Byther
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