#family_Peronosporaceae__Peronosporaceae  parasitic fungi: downy mildews
  supertype:  fungus_family  includes lichen families
  member of:  order_Peronosporales
  member:  genus_Peronospora__Peronospora  genus of destructive downy mildews
     member:  blue_mold_fungus__Peronospora_tabacina  fungus causing a serious disease in tobacco plants characterized by bluish-gray mildew on undersides of leaves
     member:  onion_mildew__onionmildew__peronosporadestructor  fungus causing a downy mildew on onions
     member:  tobacco_mildew__tobaccomildew__Peronospora_hyoscyami  fungus causing a downy mildew on growing tobacco
  member:  downy_mildew__downymildew__falsemildew  any of various fungi of the family Peronosporaceae parasitic on e.g. grapes and potatoes and melons

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