Peronospora

noun

Per·​o·​nos·​po·​ra

ˌperəˈnäspərə

: a genus (the type of the family Peronosporaceae) of destructive downy mildews having the sporangiophores dichotomously branched and with pointed tips see onion mildew, tobacco blue mold

Word History

Etymology

New Latin, from perono- + -spora

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