downy mildew

1. Any of various fungi of the family Peronosporaceae parasitic on e.g. grapes and potatoes and melons (synset 113001600)
   is a type of: mildew - a fungus that produces a superficial (usually white) growth on organic matter
   subtypes:

   • blue mold fungus, peronospora tabacina - fungus causing a serious disease in tobacco plants characterized by bluish-grey mildew on undersides of leaves
   • onion mildew, peronospora destructor - fungus causing a downy mildew on onions
   • peronospora hyoscyami, tobacco mildew - fungus causing a downy mildew on growing tobacco
   belongs to: family peronosporaceae, peronosporaceae - parasitic fungi: downy mildews
   same as: false mildew

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