ˈɜːɹɪsˌɪfeɪlz ɑːɹ ˈɑːblᵻɡˌeɪt pˈæɹəsˌaɪts ˌɔn lˈiːvz ænd fɹˈuːts ʌv hˈaɪɚ plˈænts, kˈɔːzɪŋ dɪzˈiːzᵻz kˈɔːld pˈaʊdɚɹi mˈɪldjuːz.
Erysiphales are obligate parasites on leaves and fruits of higher plants, causing diseases called powdery mildews.