ii6 



FUNGOUS DISEASES. 



may be afifected. In Fig. 23 is shown a similar 

 group of the diseased roots of the hedge mustard. 

 Here the galls are nearer hemispherical and may be 



Fig. 23 — Club Root of Hedge Mustard. 



expected at any place upon the roots. These weeds 

 bearing the club root were found in the vicinity ot 

 infested fields of cabbage and turnip, and help to 



