genus Ustilago


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Noun1.genus Ustilago - type genus of the Ustilaginaceae; genus comprising the loose smuts
fungus genus - includes lichen genera
loose smut - a smut fungus of the genus Ustilago causing a smut disease of grains in which the entire head is transformed into a dusty mass of spores
boil smut, Ustilago maydis - a common smut attacking Indian corn causing greyish white swellings that rupture to expose a black spore mass