flag smut fungus


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Noun1.flag smut fungus - a smut fungus causing a smut in cereals and other grasses that chiefly affects leaves and stems and is characterized chains of sori within the plant tissue that later rupture releasing black masses of spores
smut fungus, smut - any fungus of the order Ustilaginales
genus Urocystis, Urocystis - a genus of smut fungi belonging to the family Tilletiaceae
Urocystis tritici, wheat flag smut - fungus affecting leaves and stems of wheat