Bui. 252, Bureau of Plant Industry, U. S. Dept. of Agriculture. 



Plate IV. 



Pomelo Leaves, Showing Development in Moist Chamber of Numerous Colo- 

 nies of Glomerella cingulata on Apparently Healthy Leaves. One Year's 

 Difference in the Age of the Leaves. The Colonies Mostly. Originated 

 from the Midrib. 



