First Report of Powdery Mildew of <i>Tecoma capensis</i> Caused by <i>Erysiphe peruviana</i> in North America

Fig. 2. Appressorium formed by Erysiphe peruviana on Tecoma capensis. Scale bar = 10 ┬Ám.



Image from Plant Health Progress article:
First Report of Powdery Mildew of Tecoma capensis Caused by Erysiphe peruviana in North America