First Report of Powdery Mildew of <i>Coreopsis</i> Species Caused by <i>Golovinomyces cichoracearum</i> in the Pacific Northwest

Fig. 4. G. cichoracearum asci.



Image from Plant Health Progress article:
First Report of Powdery Mildew of Coreopsis Species Caused by Golovinomyces cichoracearum in the Pacific Northwest