''Peronospora antirrhini'' is a plant pathogen. It causes downy mildew on leaves of species of ''

Antirrhinum ''Antirrhinum'' is a genus of plants in the Plantaginaceae family, commonly known as dragon flowers or snapdragons because of the flowers' fancied resemblance to the face of a dragon that opens and closes its mouth when laterally squeezed. They ...

'' and related genera (e.g. '' Misopates''). The disease is generally of minor importance, but can be damaging on antirrhinum seedlings in the glasshouse, which may be systemically infected.

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