420 



DISEASES OF ECONOMIC PLANTS 



Heart rot {Fomes Everhartii Ell. & Galloway). — This 

 rot closely resembles that caused by Fomes igniarius. 



Fig. 180. — Tree weakened by Fomes fomentarius. After Atkinson. 



Large, rusty-brown, woody sporophores, red-brown below, 

 grow from wounds and bear very small pores. 



