AGLAOSPORA. 



227 



Pig. 110. — Examples of Oak-stem attacked by Aglaospora tateoLa. 1, Portion 

 •diseased for two years ; a, the portion still heathy ( x ■^). 2, Portion diseased 

 for four years ( x ■^). 3, Section with spots diseased for four, seven, and ten 

 jrears respectively ( x ^). (After R. Hartig.) 



