The non-native Canadian goldenrod (Solidago canadensis) in Europe. (IMAGE)
Caption
The non-native Canadian goldenrod (Solidago canadensis) in Europe, infected by the widespread native phytoparasitic microfungus Podosphaera erigerontis-canadensis, a member of the powdery mildew group with a broad host range.
Credit
Dr Ingmar Staude, Leipzig University
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