406 



G lASS'-^S OiT IOWA. 



Fig. 189. Drop-seed Grass, (Muhlenhergia syiv^jtica.) Not uncommon in deep, 

 rich woods. {F. Lamson-Scrlbner, Di7. Agrost. U, S. Dept. of Agriculture ) 



WATER FREE SUBSTANCE. 



South Dakota (2) 

 Tenness e (3) 



51.52 

 55.61 



Other Rye Grasses. — There are many other species of rye 

 grasses. Soms of these are quite valuable, especially in the 

 western states. None of them have been tried in this sta'e. 

 Macoun's rye grass {E. macounii, Vasey) only occurs in low, 

 moit meadows of northern Iowa. It produces a large number 

 of leaves; it is perhaps the most valuable of any of our wi'd rye 

 grasses. The E. condensata, the Giant rye grass of the Rocky 

 mountain regions and Pacific slope, usually grows along rivers 

 and strearrs; is useful for holding the sand on railway bauks. 

 When young it is especialy Valuable for hay, and furnishes a 



