European canker

European canker

[¦yu̇r·ə¦pē·ən ′kaŋ·kər]
(plant pathology)
A fungus disease of apple, pear, and other fruit and shade trees caused by Nectria galligena and characterized by cankers with concentric rings of callus on the trunk and branches.
A fungus disease of poplars caused by Dothichiza populea.
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