PLATE XI. 



Fig. I. Cross section of leaf of Spartina stricta, parasitized by 

 Uroniyces SpartifKZ. Magnified i lo diameters. 



Fig. 2. Cross sections of leaf of Eriophoruin Virginiciim, para- 

 sitized by Puccinia angiistata. Magnified 133 diameters. 



