44 8 



FUNGOUS DISEASES OF PLANTS 



of some consequence. It is perhaps not responsible for all the 

 injuries which have been ascribed to it in Colorado, particularly 

 in so far as the production of the disease known as " little potato" 



FIG. 220. RHIZOCTONIA PRODUCING A CROWN ROT OF BEETS 



is concerned. The fungus, however, attacks the subterranean parts 

 of the stem, as well as penetrating the roots, and the hyphae are 

 found, for the most part, enveloping stem and root, or distributed 



