Stock Photo - Paradise, Michigan - Beech bark disease on American beech trees (Fagus grandifolia) at Tahquamenon Falls State Park. The disease is caused by an insect caused the beech scale and by the Nectria fungus. The fungi enter the tree through openings created by the beech scale.

Stock Photo: Paradise, Michigan - Beech bark disease on American beech trees (Fagus grandifolia) at Tahquamenon Falls State Park. The disease is caused by an insect caused.

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