First Report of Powdery Mildew of <i>Scabiosa columbaria</i> (Dove Pincushions) Caused by <i>Erysiphe knautiae</i> in North America

Fig. 1. Powdery mildew on Scabiosa columbaria.



Image from Plant Health Progress article:
First Report of Powdery Mildew of Scabiosa columbaria (Dove Pincushions) Caused by Erysiphe knautiae in North America