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|Noun||1.||false mildew - any of various fungi of the family Peronosporaceae parasitic on e.g. grapes and potatoes and melons|
blue mold fungus, Peronospora tabacina - fungus causing a serious disease in tobacco plants characterized by bluish-grey mildew on undersides of leaves
mildew - a fungus that produces a superficial (usually white) growth on organic matter