24 SOME DISEASES OF CEREALS. 
Sporangia germinating after having fallen into water ; and 
zoospores. From Pennisetum. X 500. 
Oogonia and oospores of Sclerospora graminicola, after 
ripening: a. from Pennisetum typhoideum, b. from Andropogon 
Sorghum ; c. from Setaria italica. Optical section, diagrammatic. 
X 550. 
Fig. 8. 
Fig. 9. 
