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Leaf spot (Septoria betulae) on Birch (Betula sp.)


4 Images
5369064
Paul Bachi
University of Kentucky Research and Education Center

Incubated, infected leaf tissue with spore-producing bodies ("pycnidia") and spore oozing out in a bubble.

5369065
Paul Bachi
University of Kentucky Research and Education Center

Close-up of spore-producing bodies ("pycnidia") and spore oozing out in a bubble.

5369066
Paul Bachi
University of Kentucky Research and Education Center

Close-up of spore-producing bodies ("pycnidia") under dark-field observation.

5369067
Paul Bachi
University of Kentucky Research and Education Center

Spores of the fungus Septoria betulae under dark-field observation.