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Medical Definition of Helminthosporium leaf spot
1. A plant disease affecting some grasses which is caused by parasitic fungi from the genus Helminthosporium and which appears as discoloured spots. (09 Oct 1997)
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1. A plant disease affecting some grasses which is caused by parasitic fungi from the genus Helminthosporium and which appears as discoloured spots. (09 Oct 1997)