A New Canker Disease of Crabapple Trees Caused by <i>Phacidiopycnis washingtonensis</i> in Washington State

Fig. 2. Close-up of pycnidia of Phacidiopycnis washingtonensis on a diseased twig of crabapple. Scale bar = 0.25 mm.



Image from Plant Health Progress article:
A New Canker Disease of Crabapple Trees Caused by Phacidiopycnis washingtonensis in Washington State