NATIVE PASTUKE GEASSES OP THE UNITED STATES. 



15 





Percent- 

 age of 

 moisture. 



"Water-free basis (per cent). 



Material analyzed. 



Ash. 



Ether 

 extract. 



Crude 

 fiber. 



Nitrogen- 

 free 

 extract. 



Protein. 



Pento- 

 sans. 



Our sample No. 7107 (E. 0. W.). 



6.30 



6.70 



8.37 

 9.46 

 11.49 



2.86 

 1.66 

 5.60 



27.60 

 36.81 

 28.53 



50.83 

 42. 99 

 37.34 



10.34 

 9.08 

 1,7.04 



21.78 

 25.18 

















11.15 



4195 



29.91 



38.28 



15.71 











1 Iowa Bui. 56, p. 443. 

 BROMUS MARGINATUS Nees. 



The distribution of Bromus marginatus, a native species of brome-grass, is not 

 remarkably different from that of B. richardsoni, and the quality of the feed produced 

 by the two is somewhat similar, but this species is much coarser than the other. 



No. 8846 was collected near Summit, Mont., August 15, 1907. The seed was in 

 early dough and the plant was cut 2 inches high. No. 8887 was collected near Dee, 

 Oreg., August 23, 1907. The sample was fully mature, the upper part of the culm 

 being dead and dry, but the leaves were all green. It was cut about 3 inches above 

 the ground. 





Percent- 

 age of 

 moisture. 



Water-free basis (per cent). 



Material analyzed. 



Ash. 



Ether 

 extract. 



Crude 

 fiber. 



Ntrogein- 



free 

 extract. 



Protein. 



Pento- 

 sans. 



Our sample No. 8846 



6.23 

 7.34 



6.89 

 10.55 

 10.65 



1.91 

 2.07 

 3.61 



35.10 

 40.11 

 29.93 



49.91 

 42.99 

 40.05 



6.19 

 4.28 

 15.76 



23.97 



Our sample No. 8887 



21.22 

















10.41 



3.41 



30.89 



40.85 



14. 44 











1 Iowa: Bui. 11, pp. 465, 474; Bui. 56, p. 440. Montana Report, 1902, p. 66. Nevada Bui. 71, p. 23. South 

 Dakota Bui. 69, p. 13. Wyoming: Bui. 70, p. 28; Bui. 76, p. 22. 



BROMUS POLYANTHUS Scribn. 



Bromus polyanthus is a valuable tufted perennial species of brome-grass, inhabit- 

 ing the open wooded areas of the Rocky Mountains. It has a wide distribution in the 

 West, extending northward to Saskatchewan. So far as known, it never forms any- 

 thing like a complete stand, but on the contrary is found in isolated patches scattered 

 among other species. It is, however, an important component of the pasture lands, 

 mountain meadows, and dry hillsides throughout the region. In the San Francisco 

 highlands it has been practically killed out by grazing except where protected . 



No. 8860 was collected near Summit, Mont., August 15, 1907. The seed of this 

 sample was in milk, and the plants were harvested about 3 inches high. No. 9536 

 was collected in Prescott, Ariz., September 1, 1908. This sample was in late blossom 

 and was cut 2 inches high. 





Percent- 

 age of 

 moisture. 



Water-free basis (per cent). 



Material analyzed. 



Ash. 



Ether 

 extract. 



Crude 

 fiber. 



Nitrogen- 

 free 

 extract. 



Protein. 



Pento- 

 sans. 



Our sample No. 8860 



4.22 

 6.39 



4.12 

 10.88 

 5.57 



2.04 

 1.59 

 1.71 



34.01 

 37.56 

 35.09 



53.24 

 41.89 

 47.22 



6.59 



8.08 

 10.41 



25.00 



Our sample No. 9536 



19 38 



One other sample l 











Average of all 





6.86 



1.78 



35.55 



47.45 



8.36 











1 Wyoming Bui. 87, p. 32. 



