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Noun: blue mold fungus
Usage: US (elsewhere: blue mould fungus)
  1. Fungus causing a serious disease in tobacco plants characterized by bluish-grey mildew on undersides of leaves
    - Peronospora tabacina, blue mould fungus [Brit, Cdn]

Derived forms: blue mold fungi

Type of: downy mildew, false mildew

Part of: genus Peronospora, Peronospora

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