18 



BULLETIN 201, U. S. DEPARTMENT OF AGRICULTURE. 



CALAMAGROSTIS MONTANENSIS Scribn. 



Upon the prairies of the Dakotas and eastern Montana, Calamagrostis montanensis is 

 a plant of low stature, inhabiting high prairies entirely. It attains a maximum height 

 of 7 or 8 inches. In favorable situations, however, it may be 1 J feet in height and can 

 contribute very decidedly to the pasturage of the region. It is a tough, wiry species, 

 but readily grazed by all kinds of live stock. It never forms a turf or anything 

 approaching a complete stand. It is found scattering among species of Agropyron, 

 Bouteloua, and Sporobolus. 



No. 8818 was collected at Devils Lake, N. Dak., August 11, 1907. The specimen 

 was a robust one, 15 to 18 inches high, and was cut close to the ground. It was over- 

 mature, but the whole plant was still in a green condition, with the exception of the 

 lower leaves. The seeds were very badly ergo ted. 





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. 8818 



6.21 



11.10 

 10.01 



2.78 

 1.99 



32.68 

 33.08 



48.77 

 49.09 



4.67 

 5.83 



27.53 

















10.55 



2.39 



32.88 



48.93 



5.25 











i South Dakota Bui. 69, p. 19. 

 CALAMOVILFA LONGIFOLIA (Hook.) Hack. 



Calamovilfa longifolia (big sand-grass) is a species conspicuous in sandy regions 

 from British Columbia to central Arizona and eastward to Indiana. It is especially 

 at home upon sandy lands of the Plains regions and is common in many situations in 

 northern Arizona. Its rapid spread by running rootstocks renders it of some value 

 in holding sands and makes it quite a persistent grass for sandy regions. It is coarse 

 and harsh; consequently, it is not relished by stock while finer feeds are available. 

 In portions of western Nebraska and the Dakotas it forms a large part of the winter 

 grazing, and on this account is, of course, very important. When cut in season it 

 makes a fair quality of coarse hay. 



No. 8828 was collected at Williston, N. Dak., August 11, 1907. The specimen was 

 in late blossom and was cut at the surface of the ground. 





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. 8828 



6.79 



4.80 

 6.93 



2.08 

 1.73 



37.64 

 40.24 



50.18 

 44.79 



5.30 

 6.31 



25.18 

















6.39 



1.82 



39.59 



46.14 



6.06 











i Montana Report, 1902, p. 66; South Dakota Bui. 40, p. 88; Wyoming Bui. 87, p. 38. 

 CHAETOCHLOA GRIESBACHn (Fourn.) Scribn. 



Chaetochloa griesbachii is an upright, smooth, rank, perennial native millet, distri- 

 buted from Texas to Arizona. It is especially abundant upon dry, sandy situations 

 in southern Texas. While frequent in southern Arizona, it is not of nearly as much 

 importance. It is an important grass in Texas, furnishing a large amount of palatable 

 grazing. Nothing is known of it as a hay grass. 



No. 8384 was collected at Encinal, Tex., August 12, 1906. The sample represents 

 the plant when fully matured, but before any of the seed had fallen. It was cut about 

 2 inches high. Its percentage of moisture was 10.58. Other constituents (on a water- 

 free basis) were at follows: Ash, 11.58; ether extract, 1.70; crude fiber, 11.49; nitrogen- 

 free extract, 65.51; protein, 9.72; pentosans, 22.05. 



