#genus_Ustilago__Ustilago  type genus of the Ustilaginaceae; genus comprising the loose smuts
  supertype:  fungus_genus  includes lichen genera
  member:  loose_smut__loosesmut  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
  member:  boil_smut__Ustilago_maydis  a common smut attacking Indian corn causing grayish white swellings that rupture to expose a black spore mass

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