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soot'y blotch'



Plant Pathol.
1. a disease, esp. of apples and pears, characterized by sootlike spots or blotches on the fruit, caused by a fungus, Gloeodes pomigena.
2. a disease of clover, characterized by black, crusty blotches on the underside of the leaves, caused by a fungus, Cymadothea trifolii.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

sootysooty mold

 

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