GRASSES OF IOWA. 



31 



FIr. 25. Section oi! leaf of Andropogon nutans. Car. mid-nerve; Unc. Par, uncol- 

 ored pareachyma; B, bulltform celis; ite, stereome; £C, epidermal cells; CP, conical 

 point. (Weaver and King ) 



plants, belonging to the>same genus. Miss Ogden;!: describes 

 the anatomical character of the Eragrostis obtusijlora thus: 



5: 1. c. 17. 



