First report of powdery mildew caused by Podosphaera sp. on Cynanchum auriculatum

Powdery mildew symptoms were observed on the upper surface of leaves of Cynanchum auriculatum in Eumseong, Korea in October 2015. Microscopic observations and molecular characteristics determined this fungus as Podosphaera sp., which is reported for the first time on Cynanchum auriculatum.