22 



Journal of Agricultural Research 



Vol. VI, No. I 



_~^ i /O/A. 



Fig. I. — Cercospora beticola: A , Section of overwintered sugar-beet leaf showing embedded sclerotia-like 

 body, a, with a mass of old conidiophores, b, from which a new conidium, c, was produced. B. Produc- 

 tion of rather typical conidiophores, b, and conidia, c, from a sclerotia-like mass, a, taken from over- 

 wintered h"st material and placed in hanging-drop cultures. 



