Alphitomorpha clandestina Wallr., (1819) Erysiphe oxyacanthae DC., (1815) Oidium crataegi Grognot, (1882) Podosphaera clandestina (Wallr.)
de Bary, (1870) Podosphaera clandestina var.
clandestina is a plant pathogen that causes a powdery mildew in apricots and peaches.
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