PAPERS OX BOTANY 173 



Winn, C. G. 



1916. The Apple Crop of 1915. Trans. 111. Hort. Soc. N. S. Vol. 



49, p. 351, 352. 



Reports serious infection of sooty blotch in unsprayed 



orchard, while trees nearby, sprayed three times with 



lime sulfur, were clean. "Clouded" fruit sold in 



Chicago for much less than clean fruit. 



Whetzel, H. H., and Hesler, L. R. 



1916. Sooty Blotch. In The Fruit Industry of New York State. 



N. Y. Dept. of AgT. Bui. 79, I. p. S69-S70, fig. 244-245. 

 Describe fungus. Fly Speck is said to be another form. 

 The late spray for scab should control. 



Hesler, L. R., and Whetzel, H. H. 



1917. Sooty Blotch and Fly-Speck. Leptothyrium pomi (Mont. & 



Fr.) Sacc. In Manual of Fruit Diseases, p. 104-108. fig. 

 28-29. New York. 



Fungus described. Susceptible varieties of apples 

 and pears listed. Geographical range noted. Pro- 

 visional life history sketched. Control measures 

 recommended. 



Howitt, J. E., and Caesar, L. 



1917. Sooty Blotch and Fly Speck. In The More Important Fruit 



Tree Diseases of Ontario. Ont. Agr. Col. and Exp. Farms 

 Bui. 257, p. 12, illus. 

 Apples not injured as fungus is superficial. Affected 

 fruit rendered unattractive, reducing sales. Con- 

 trol measures recommended. 



Coons, G. H., and Nelson, Ray. 



1918. Sooty Blotch. Fly Speck. (Leptothyrium pomi). 



In The Plant Diseases of Importance in the Transporta- 

 tion of Fruits and Vegetables. Am. Ry. Perishable 

 Freight Assoc. Circ. 473-A. p. 16. fig. 19. 



The presence of apples showing such superficial blem- 

 ishes "in shipment is indicative of low-grade fruit, 

 not properly sprayed." 



Martin, G. W. 



1918. Brown Blotch of the Kieffer Pear. In Phytopath. 8: 5, p. 

 234-S, fig. 9. 

 Description and experimental data. Probably closely 

 related to Leptothyrium pomi. but distinguished by its 

 smaller size, straighter connecting strands, and that 

 it burrows into the cutin and causes hypertrophy 

 of the subcuticular layers. Spray schedule recom- 

 mended. 



