hollyhock rust puccinia malvacearum pustules the flower bud |
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navigate by keyword : agriculture and biology chlorosis closeup control danger disease diseased farming flower fungi fungicide fungual fungus garden gardening green grow hollyhock home infection infest leaf macro mallow malva malvaceae malvacearum microorganism mold mould nature necrosis nursery parasite pathogen pathology pest pesticide phytopathology plague plant problem protection puccinia pustules repellent rose rust spores spot spots sylvestris |
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Image shows hollyhock rust, Puccinia malvacearum, pustules on the flower buds of a hollyhock, orange pustules are visible on the surface of infested buds |
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