The Ohio ^h[^atiiralist, 



PUBLISHED BY 



The Biological Club of the Ohio State Uni'versity. 

 Volume XIV. APRIL, 1914. No. 6. 



TABLE OF CONTENTS. 



Melchers— A Preliminary Report ou Raspberry Curl or Yellows 281 



Wells— Some Unreported Cecidia from Connecticut 289 



Humphrey— The Honeysuckle Family in Ohio 299 



A PRELIMINARY REPORT ON RASPBERRY CURL OR 



YELLOWS * 



Leo E. Melchers 



Raspberry curl, or "yellows," can probably be regarded as the 

 most serious of raspberry diseases. This malady was first re- 

 ported by Green in Minnesota (ISQ-i), and is apparently the same 

 trouble as mentioned by Stewart and Eustace (1902), who called 

 it "raspberry yellows." The writer believes that the original 

 name, raspberry leaf curl, or raspberry curl, is descriptively more 

 appropriate and lessens the possibilities of a misconception re- 

 garding its undetermined cause. 



Although this malady has been known for some years, little 

 work seems to have been done upon it. Green (1895), reported 

 raspberry leaf curl as the worst raspberry disease in the state. 

 Stewart and Eustace (1902), reported raspberry yellows as occur- 

 ring in New York ; they regarded it as distinct from raspberry cane 

 blight caused by Coniothyrium fuckelii Sacc, (Leptosphaeria 

 coniothyrium (Fckl.) Sacc, and the description of its field char- 

 acteristics show it to be entirely different. Clinton (1903, p. 35), 

 mentioned cane blight of raspberries, but from the symptoms 

 given, namely, that "the foliage of the infected cane is usually 

 streaked with yellow and crinkled," he appears to have been 

 describing the raspberry curl disease, for the above s}'mptoms 

 are not characteristic of cane blight caused by Leptosphaeria 

 coniothyrium (Fckl.) Sacc. Paddock (1914-5), stated that rasp- 

 berry yellows attacked the Malboro in Colorado. Sackett (1910), 

 merely mentions raspberry yellows, without giving any descrip- 



* Department of Plant Pathology, Kansas State Agricultural College, 

 Manhattan, Kansas. 



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