urocystis : Idioms & Phrases
genus urocystis
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noun a genus of smut fungi belonging to the family Tilletiaceae
Urocystis.
WordNet
urocystis cepulae
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noun smut fungus causing blackish blisters on scales and leaves of onions; especially destructive to seedlings
onion smut.
WordNet
urocystis tritici
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noun fungus affecting leaves and stems of wheat
wheat flag smut.