PIRATE io 
Photographs and photomicrographs of Sclerotinia ricini . 
A. —Gray mold in pure culture on a poured plate of com meal agar. Culture about 
3 days old. Natural size. 
B. —Same as A. Approximately X 3. 
C. —Germinating ascospores, in some cases with the production of microconidia. 
D. —Ascospores as ejected from apothecia in groups of eight. 
Photographed by the photographic laboratory, United States Department of 
Agriculture. 
