false mildew

/fɔls ˌmɪlˈdu/

Definitions of false mildew

1. noun

   any of various fungi of the family Peronosporaceae parasitic on e.g. grapes and potatoes and melons
   synonyms: downy mildew

   types:

   Peronospora tabacina, blue mold fungus

   fungus causing a serious disease in tobacco plants characterized by bluish-grey mildew on undersides of leaves

   Peronospora destructor, onion mildew

   fungus causing a downy mildew on onions

   Peronospora hyoscyami, tobacco mildew

   fungus causing a downy mildew on growing tobacco

   type of:

   mildew

   a fungus that produces a superficial (usually white) growth on organic matter