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Black Knot (Apiosporina morbosa) on Black Cherry Tree (Prunus serotina)
On Black Cherry (Prunus serotina).
Apiosporina morbosa is a pathogen of cherry, plum, chokecherry, and apricot trees in North America. Black Knot affects the woody parts of these trees, causing olive green swellings (seen in spring) which mature to oozing, black knots (by autumn). These knots encourage insect infestations which can lead to tree weakening and eventual death.
''Dibotryon morbosum'' or ''Apiosporina morbosa'' is a plant pathogen, which is the causal agent of black knot. It affects cherry, plum, apricot and chokecherry trees in North America. The disease produces rough, black growths that encircle and kill the infested parts, and provide habitat for insects.
Similar species: Pleosporales
By Flown Kimmerling
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Uploaded Oct 1, 2018. Captured Sep 29, 2018 14:42 in 21 North Dr, Armuchee, GA 30105, USA.
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