Bui. 226, Bureau of Plant Industry, U. S. Dept. of Agriculture. 



Plate XIII. 



Fig. 1.— Leaf of Winged Elm Affected with Scab Due to Gnomonia Ulmea. 

 Fig. 2.— Leaf of Red Mulberry, Showing Eye-Spot Due to Cercospora Moricola. 

 Fig. 3.— Leaf of Live Oak, Showing Tar-Spot Due to Rhytisma Erythrosporum. 

 Fig. 4.— Leaflets of Black Locust, Showing the Characteristic Spotting Due to 

 Cylindrosporium Solitarium. 



