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.

---