Rose – Black Spot
Diplocarpon rosae Rose – Black Spot Signs & Symptoms
Figure 2. Acervuli fruiting structure. Photo by Dr. Bruce Watt.
Diseased plant
Affected leaf
Dying affected leaf
Rose – Black Spot Pathogen
Vertical section of acervulus
Vertical section of acervuli
Vertical section of acervulus
Figure 3. Two-celled conidia spores. Photo by Dr. Bruce Watt.
Conidia
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Rose – Black Spot