Peronospora antirrhini is a plant pathogen. It causes downy mildew on leaves of species of Antirrhinum and related genera (e.g. Misopates).[1]
The disease is generally of minor importance, but can be damaging on antirrhinum seedlings in the glasshouse, which may be systemically infected.[2]
References
Further reading
Byrne, JM; Hausbeck, MK; Sconyers, LE (October 2005). "Influence of Environment on Atmospheric Concentrations of Peronospora antirrhini Sporangia in Field-Grown Snapdragon". Plant Disease. 89 (10): 1060–1066. Bibcode:2005PlDis..89.1060B. doi:10.1094/PD-89-1060. PMID 30791273.