First Report of Powdery Mildew of Carrot and Parsley Caused by <i>Erysiphe heraclei</i> in Washington State

Fig. 2. Conidium formed on carrot by Erysiphe heraclei.



Image from Plant Health Progress article:
First Report of Powdery Mildew of Carrot and Parsley Caused by Erysiphe heraclei in Washington State