beech bark disease

noun

Definition of beech bark disease

: a disease of beech especially destructive in eastern Canada and northern U.S. that is due to the combined activities of the beech scale (Cryptococcus fagi) and a fungus (Nectria coccinea faginata) and causes destruction of living bark, wilting of foliage, and finally death of the tree

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Cite this Entry

“Beech bark disease.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/beech%20bark%20disease. Accessed 17 Oct. 2021.

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