Also found in: Thesaurus.
Related to genus Peronospora: Peronospora destructor
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|Noun||1.||genus Peronospora - genus of destructive downy mildews |
fungus genus - includes lichen genera
blue mold fungus, Peronospora tabacina - fungus causing a serious disease in tobacco plants characterized by bluish-grey mildew on undersides of leaves