Some Important Pear Diseases. 



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minute black fruit bodies, or pycnidia, in which the spores are borne. 

 The next zone is brown, and this often grades into a region purplish 

 in color. The details of these characters are lost in old or dried leaves ; 

 but the cluster of fruit-bodies is very evident in the center of the spot 



158. — Small f angular spots produced by the 'leaf-spot fungus on an unknown variety 



of pear in a neglected orchard. 



on one or both surfaces of the leaf, especially if examined with a 

 hand lens. 



2. Geographical Distribution of the Fungus. 



There is every reason to believe that in New York State this fungus 

 is to be found wherever there are pears. I have collected it in three- 

 fourths of the counties bordering the N. Y. C. and H. R. R. R. from 

 Buffalo to New York, and it is also abundant in south central portions 

 of the state, It has been sent to me from Pennsylvania, Maryland 



