armillaria root rot

American  

[ahr-muh-lair-ee-uh] / ˌɑr məˈlɛər i ə /

noun

1. a widespread rot caused by the honey mushroom, Armillariella mellea, seriously damaging to the roots of various hardwoods, conifers, and other trees.

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Etymology

Origin of armillaria root rot

< New Latin Armillaria an earlier name for the genus, equivalent to Latin armill ( a ) bracelet (referring to the braceletlike frill on such mushrooms; see armillary) + -aria, feminine of -arius -ary