Willowherb Rust puccinia pulverulenta on Epilobium hirsutum underside of leaf Willowherb Rust puccinia pulverulenta on Epilobium hirsutum, underside of leaf Scientific classification Scientific classification Species of the fungus Botrytis cause neck rot or gray mold disease. Symptoms may appear in the field... Species of the fungus Botrytis cause neck rot or gray mold disease. Symptoms may appear in the field...
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