
430 BOTANICAL GAZETTE [NOVEMBER 
made, and that a more comprehensive study may reveal a wider 
variation than is here indicated. 

c . 
Fic. 6.—Asci and ascospores: a, ascus from Maryland plum; 6 and ¢, ascl = 
ascospores from Maryland plums; d, from Maryland peach; all X400. 
Conclusions 
The 300 experiments on different fruits show in every instance 
a wide difference between the S. fructigena of Europe and the local 
brown rot. First, they differ in the rate of growth, the former 

