found on apples other than the generalization that S. fructi^e na 

 is in nature on pomaceous fruits. 



The blossoms and twigs of the peach, pliaa, and cherry 

 are reported as attacked by the fungus but no definite refer- 

 ence has been found to the effect that apples are so attacked. 

 1^3,13,14 jj^g fruits of the apple, however, are very character- 

 istically affected and quite differently from the plum and peach. 

 The plum may be entirely rotted inside and show no external ev- 

 idence until the tufts of spores appear. The peach shows, immed- 

 iatiy, a more or less circular brown spot which enlarges rapidly 

 until the whole fruit is infected. and this soon becomes covered 

 with an ash grey mould. Both the plum and peach may become "mvim- 

 mified" the former retaining clumps of spores on the surface, 

 the latter losing the spores but retaining the internal mycel- 



ium, ^"^ 



On the apple the fungus is preceded by a brown decayed 



patch on which greyish white tufts of spores appear. These are 



17 .... 

 generally in concentric rings remaining so in the muminiiiea 



fruit. This is not true in the case of the plum and peach. 

 As im the peach the decay continues until the whole fruit is 

 covered. In many cases the diseased fruits do not fall but 

 remain on the trees until spring, when either the old coniaia 

 or those of a new crop are ready to infect the new fruit. In 

 some instances when the apples are attacked no conidia are form- 

 ed until the following season, In this case the skin becomes 

 hard and black. This is perhaps the sclerotial stage. 



About the earliest mention of Brown Rot as a distinctive 



