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Norway maple (Acer platanoides) infected with Cryptostroma corticale, the fungal agent responsible of Sooty Bark Disease. White immature stroma erupting from debarked stem (probably by rodents). Diagnostic was confirmed with morphological observation of the conidia and qPCR test (Pacific forestry Centre, Victoria, BC).

Sycamore maple infected with Cryptostroma corticale, the fungal agent responsible of Sooty Bark Disease. White immature stroma with lightly colored conidia; should turn brown to black with time. Diagnostic was confirmed with morphological observation of the spores and qPCR test (Pacific forestry Centre, Victoria, BC).