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



Plate VI. 



Glomerella cingulata on Two Orange Leaves, Showing Development of the 

 Fungus on Apparently Healthy Leaves in a Moist Chamber and Localiza- 

 tion of the Colonies. The Rubber Plant Leaf at the Right Shows Devel- 

 opment of the Fungus Proceeding from the Petiole Along the Midrib. 



