First Report of <i>Phragmidium violaceum</i> Infecting Himalaya and Evergreen Blackberries in North America

Fig. 3. Uredinia, urediniospores, and paraphyses of Phragmidium violaceum (photo by N. Osterbauer). The presence of paraphyses distinguishes P. violaceum uredinia and aecia from those of Kuehneola uredinis, the native caneberry rust.



Image from Plant Health Progress article:
First Report of Phragmidium violaceum Infecting Himalaya and Evergreen Blackberries in North America