308 APPLIED BACTERIOLOGY 



According to C. Wehmer, the fungus which most 

 commonly causes the rotting of fruits is Fenicillium 

 fjlaucum. In apples and pears this is accompanied by 

 Mucor pyriformis, and in the case of medlars the latter 

 is much the most common fungus. In lemons, oranges, 

 and other tropical and sub-tropical fruits, P. glaucwm is 

 associated with two other closely allied species, P. italicwm 

 and oUvaceum. In plums Mucor racemosus was also 

 observed. In grapes P. glaucum and Botrytis cinerea are 

 the most common fungi. It is the latter species which 

 forms the gray tufts on walnuts. 



