

Vol. 10. 1923] 



174 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



Explanation of Plate 



plate n 



Fig. 1. Pvcnidia of Diaporthe Sojae: A, autoclaved stem of Melilotus alba; B, 

 stem of soybean plant grown in the greenhouse and artificially inoculated; C, auto- 

 claved petiole of a soybean leaf (Note the long beaks that often develop in culture) ; 

 D, autoclaved stem of a soybean plant. 



Fig. 2. Perithecia of Diaporthe Sojae formed in cultures on autoclaved petioles 

 of soybean leaves. Note the tendency to form in clusters and the long curved and 

 crooked beaks. Photograph by Mr. A. F. Camp. 



