U. S. DEPARTMENT OF AGRICULTURE. 
DIVISION OF VEGETABLE PATHOLOGY, 
Vol. VI. 
No. 4. 
THE 
JOUKNAL OF MYCOLOGY: 
DEVOTED ESPECIALLY TO THE STUDY OF FUNGI 
IN THEIR RELATION TO PLANT DISEASES. 
EDITED BY 
THE CHIEF OF DIVISION AND HIS ASSISTANTS. 
PUBLISHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURE. 
WASHINGTON: 
GOVERNMENT PRINTING OFFICE. 
1891. 
