Australasian Plant Disease Notes, cilt.5, sa.1, ss.61-62, 2010 (ESCI)
Powdery mildew symptoms were observed on the leaves of horse chestnut (Aesculus hippocastanum) which is common in urban areas of Ordu province, Turkey. The pathogen was identified as Erysiphe flexuosa based on morphological characters. This is the first report of E. flexuosa on horse chestnut from Turkey.