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This fungus is the cause of the well-known deformities of 

 the domestic plum, Primus domcstica, and it is very generally 



ASCOMYCETES 



III. I'LT.M POCKETS 

 Pruni Fuckel 



FIG. 67. PLUM POCKETS ON CULTIVATED PRUNUS. (Photograph by 

 II. II. Whetzel) 



distributed throughout Europe and portions of the L'nited States. 

 The etiology and general life history is not sufficiently different 

 from the peach leaf curl to require detailed treatment, but the 



