FIG. 62. POTATO DISEASES. 



c. Early blight (after L. R. Jone^), b. spores of the early blight fungus, c. silver 

 scurf, d. conidiophores and conidia of the silver scurf fungus, e. and /. Fusarium 

 oxysporum wilt in tubers, g. chlamydospores and one to several celled conidia of 

 F. oxysporum, h. conidiophores of F. oxysporum (g. and h. after Sherbakoff) , *. Ver- 

 ticillium wilt (after Orton). 



