Bulletin No. 23. 



V. V. p. 7G. 



U. S. DEPARTMENT OF AGRICULTURE, 



DIVISION OF VEGETABLE PHYSIOLOGY AND PATHOLOGY. 

 B. T. GALLOWAY, Chief. 



SPOT DISEASE OF THE VIOLET. 



(Alternaria violm n. sp. ) 



BV 



P. H. DORSETT, 



Associate, Division of Vegetable Physiology and Pathology. 



Issued November 28, 1900. 



WASHINGTON: 



O O V i; R N M E N T PRINTING O K K I C E . 

 I 900. 



