peronospora anemones peronospora anemones peronospora anemones is a plant pathogen. it causes downy mildew on leaves of anemone (anemone spp.). it occurs on various wild and garden forms of anemone, and has particular commercial importance on anemone coronaria grown for cut flowers, for example in france and italy. peronospora anemones scientific classification (unranked): sar superphylum: heterokonta class: oomycetes order: peronosporales family: peronosporaceae genus: peronospora species: p. anemones binomial name peronospora anemonestramier, (1963)