1. fungus causing a serious disease in tobacco plants characterized by bluish-grey mildew on undersides of leaves; [syn: blue mold fungus, Peronospora tabacina]
WordNet (r) 3.0 (2006):
blue mold fungus
n 1: fungus causing a serious disease in tobacco plants
characterized by bluish-grey mildew on undersides of leaves
[syn: blue mold fungus, Peronospora tabacina]