PLATE 58 



Prunus leaves from inoculation experiments (Table VIII): 



A. — P. serotina, infected by a strain of Coccomyces from P. serotina, series 3. 

 B. — P. mahaleb, sparsely infected by a strain from P. serotina, series 3. 

 C. — P. insititia, infected, after prolonged incubation in the greenhouse, by a strain 

 from P. serotina, series 105. 



D. — P. serotina, uninoculated, series 105. 



