chestnut blight

(Cryphonectria parasitica)

An Asiatic fungal disease that wiped out the American chestnut Castanea dentata, a prominent tree of the Appalachian forests, in the first half of the 20th C. Chestnut blight is also an alien invasive species Europe.

This definition is abridged from A – Z of tree terms: A companion to British arboriculture.
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