Fig. 25. . Sweet Potato Diseases. 



a. Slime. mold {Fuligo violacea), h. slime mold {Pkysarum plumbeu'm), c. pox or 

 pit, d. formation of a cyst and liberation of spores of Cystospora batata (after ElHot), 

 e. white rust, /. oospore of the white rust fungus, g. soft rot, h. ring rot, i. fruiting 

 stalks of Rkizopus nigricans. 



