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crown rust

noun, Plant Pathology
1.
a disease of oats and other grasses, characterized by the formation, on the leaves, of orange or black spores, caused by a rust fungus, Puccinia coronata.
Origin
1895-1900
1895-1900
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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10
12
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