Noun peronospora has 1 sense
  1. Peronospora, genus Peronospora - genus of destructive downy mildews
    --1 is a kind of fungus genus
    --1 is a member of Peronosporaceae, family Peronosporaceae
    --1 has members:
     blue mold fungus, Peronospora tabacina; onion mildew, Peronospora destructor; tobacco mildew, Peronospora hyoscyami
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