540 



BACTERIAL DISEASES OF PLANTS 



Fk;. 411.— Hyperplasias on tumefied potato shoots Kerminating on a table 

 without soil or water. Diffused north hght, temperature 25°C. Shoots full fo 

 starch, sugar, acids and oxydizing enzymes. The intumescences were under wide 

 open stomata (.See Fig. 413.) 



