THE PLUM 71 



SHOT-HOLE FUNGUS, which first appears in the shape 

 of small dark purple spots scattered over the leaf. 

 These spots soon become brown, and the leaf tissue 



Diseased Plum Leaf 



(After Bailey) 



composing them is dead. This dead tissue generally 

 drops out of the leaf in course of a few weeks, leaving 

 circular holes resembling shot holes. A microscopic 

 examination of the under surface of these spots gen- 



