Bui. 1038, U. S. Dept. of Agriculture. 



Plate 



:n S'f BalninorB, 



Different Stages of Pecan Rosette. 



[illustration by J. F. BREWER.] 



Fig. 1.— Enlargement of one of the yellow spots on. a pecan leaf in the secondary stage of rosette showing 

 the distortion of vein islets and their radial'expansion around a focal center. X about 30. Fig. 2.— 

 Pecan leaflet in thesecondarv stage of rosette, showingthedistribulion of yellow spots between the side 

 veins and the crinkling and roughening of the leaf surface. Natural size. Fig. 3.— Pecan leaflet 

 showing the red-brown stage of rosette which often follows either the primary or the secondary stag^e. 

 Natural size. Fig. 4.— Pecan leaves in the primary stage of rosette, showing no external signs of the 

 disease except the yellow mottling between the side veins. Natural size. 



