#genus_Peronospora__Peronospora  genus of destructive downy mildews
  supertype:  fungus_genus  includes lichen genera
  member of:  family_Peronosporaceae
  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

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