Powdery Mildew (Podosphaera clandestina)

Powdery Mildew (Podosphaera clandestina)

Observation - Powdery Mildew (Podosphaera clandestina). Description: This seems to be the species of powdery mildew which grows on hawthorn.

This seems to be the species of powdery mildew which grows on hawthorn.