Leaf Spotting of Turkish Filbert in Colorado Caused by <i>Xanthomonas arboricola</i> pv. <i>corylina</i> and <i>Pseudomonas syringae</i> pv. <i>syringae</i>

Fig. 1. (B) Symptoms caused by Xanthomonas arboricola pv. corylina in Turkish filbert include small, black angular spots concentrated on the leaf veins and margins. Pseudomonas syringae pv. syringae was also isolated from leaf spots.



Image from Plant Health Progress article:
Leaf Spotting of Turkish Filbert in Colorado Caused by Xanthomonas arboricola pv. corylina and Pseudomonas syringae pv. syringae