【上位】 destructive diseases of plants (especially cereal grasses) caused by fungi that produce black powdery masses of spores 黒い大量の粉状の胞子を生じる菌類に起因する植物（特にシリアル草）の有害な病気。
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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 全頭が胞子の埃っぽい量に変わる穀物の猥褻病を引き起こす黒穂菌属の猥褻真菌。
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