202 X. TAXAKA. 



Explanation of Figures in Plates XXIV — XXVII. 



Plate XXIV. 



Fiq. 1. Sketch of tlie base of a young mulberry tree, injured by 

 the disease at the roots a, }>. The upper portion a' and the roots c are 

 free from the disease ; the lower portion a of the roots a is completely 

 disorganized. Beduced. 



Fig. 2. Portion of the base of a shoot, showing the young 

 pileus a of the fungus. Natural size. 



Fig. 3. More advanced stage of a similar pileus with its pro- 

 jecting parts a. Natural size. 



B'ig. 4. Mature form of a similar pileus ; a its projecting part; 

 b its basal ])art. Natural size. 



Plate XXV. 



Fig. 1. Mîiture form of the pileus of the fungus, showing its 



upper surface. Natural size. 



Fig 2. Lower surface of the same. Natural size. 



Fig. 3. Young stage of the pileus carefully detached from its 



substratum. Natural size. 



■/'':: Fig. 4. Portion of a diseased root, with mycelial strands of the 



iiTDgus. Natural size. 



- - Fig. Ô. Portion of the mycelial strands detached. Natural size. 



Fig. 6. Group of mycelial strands. Natural size. 



Plate XXVI. 



Fig. 1. Hyphee of mycelial strands. x 440. 



F'ig. 2. Cross section of the same. x440. 



