oak root rot

oak-root rot

[ohk-root, -root]
noun Plant Pathology.
a disease of oaks and other trees and woody plants, caused by the fungus Amillariella mellea (oak-root fungus) the fruiting body of which is the honey mushroom, and characterized by rotting roots, girdling of crown, and eventual death of the tree.
Also called shoestring root rot.
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