FIG. 35. RADISH DISEASES. 



a. Young radishes attacked by Rheosporangium damping off, b. presporangium 

 C. mycelium of Rheosporangium aphanidermatum , d. fertilization of the female 

 oogonium by the male antheridium, e. mature oospore, /. root knot (b to e afler 

 Edson). 



