Jul. 1118, U. S. Dept. of Agriculture. 



Plate IX. 



Fig. I. — Twigs of Sour Orange Affected with 

 Citrus Scab. 



These infections took place in southern Florida dining the summer of 1920. 









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Fig. 2. — Citrus Scab on the Leaves of Sour Orange. 



These leaves expanded and became infected in tlie Government nursery at 

 Orlando, Fla., during the summer of 1920. 



