Phyllactinia guttata is a Host for Cladosporium uredinicola in Washington State

Abstract

The powdery mildew fungus Phyllactinia guttata, parasitic on European hazelnut (Corylus avellana), is a host for the fungicolous hyphomycete Cladosporium uredinicola in Washington State. Mucilaginous penicillate cells at the apices of the Phyllactinia ascocarps are the primary site for colonization and sporulation by C. uredinicola. Range of morphological variation in C. uredinicola from P. guttata was congruent with previous descriptions from hosts in Uredinales.