ILLUSTRATIONS. 
Bouteloua oligostachya Gramma-grass, PL I 
Buchloe dactyloides Buffalo-grass, PL II 
Andropogon provincialis Blue-joint, PL III 
Andropogon scoparius Wire-grass, Sedge-grass, PL IV 
Panicum virgatum S witch-grass, PL V 
Distichlis maritima Alkali or Salt-grass, PL VI 
Ghrysopogon nutans Reed-grass, Sorghum-grass, PL VII 
Koeleria cristata Wild June-grass, PL VIII 
Miahlenbergia glomerata PL IX 
Hilaria Jamesii PL X 
Sporobolus cryptandrus PL XI 
Sporobolus airoides Baneb-grass, PL XII 
Ely mils Canadensis Rye-grass, PL XIII 
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