380 



GRASSES OF IOWA, 



NATURAL CONDITION. 



WATER FREE SUBSTANCE. 



Same as above | 8 52 | 1.92 | 43.90 | 4.97 | 40 69 



BLUE STEMS. 



These grasses are among the most important of our native 

 prairie grasses. In early days they constituted an important 

 part of the forage- All of the species belong to Andropogon. 



Fig. 176. Big blue stem, (Andropoaon provincialin). A.t one time one of the 

 most abundant of the grasses of the prairies. A good.grass. (F. Lamson 

 Scrlbner, Dlv. Agrost. U. S. Dept. of Agrl.) 



1. Bull. S. D. Agrl. Exp. Sta. 40 : 152. 



