ILLUSTILATIONS. 



PLATES. 



Page. 



PI. I. Poaturneri Scribn 22 



II. Poa leibergii Scribn 22 



III. Panlcum leibergii Scribn 22 



IV. Elymus brownii Scribn, &■ Smith 22 



V. Eragrostis obtiisifiora Scribn.. 22 



VI. Sporobolns plumbeus Heuisl 22 



VII. Muhlenbergia flaviseta Scribn 22 



VIII. Leaf Structure of Jouvea and of Eragrostis obtusitiora 22 



IX. Leaf Structure of Jouvea, Eragrostis obtusiflora, and Disticblis spicata. 22 



FIGURES. 



Fig. 1. Elymus tlavoscens Scribn. &- Smith 9 



4 



