Fig. 35. Radish Diseases. 



a. Young radishes attacked by Rheosporangium damping off, 6. presporangium, 

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

 oogonium by the male antheridium, e. mature oospore, /. root knot {h. to e. after 

 Edson). 



