oak-root rot

American  

[ohk-root, -root] / ˈoʊkˌrut, -ˌrʊt /

noun

Plant Pathology.

1. 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.

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