410 



DISEASES OF ECONOMIC PLANTS 



that rot usually begins in standing timber. Such rots 

 might therefore be appropriately termed " wound decays." 







>^.> 



.H:.-pj 









(^ "i" .-if. •.'C7'r!''t; ; , 



Fig. 174. — Fomes igniarius upon live beech tree. After Atkinson. 



The fungi which cause these decays are, in the main, 

 the larger fungi whose fructification is of the toadstool 



