NATIVE PASTURE GRASSES OF THE UNITED STATES. 



17 



of heat and moisture are more favorable, it may become a foot high. In spite of this, 

 however, its importance upon the Plains is greater than in southern Texas, for two 

 reasons. Upon the Plains it dry-cures and furnishes excellent winter grazing. In 

 south Texas the rainfall is more irregular, making the use of dry-grass pasture of 

 shorter duration and much less importance. There is probably very little difference 

 in the value of this species and Bouteloua gracilis for dry grazing. 



No. 9315 was collected near Bellevue, Tex., June 26, 1908. The sample consisted 

 of the staminate plant mostly and was cut close to the ground. It was a little out 

 of blossom. 





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. 9315 



6.18 



10.25 

 10.55 



1.23 

 2.26 



25.74 

 25.22 



57.08 

 54.35 



5.70 

 7.62 



20.56 













10.51 



2.11 



25.29 



54.74 



7.35 











1 Canada Central Experiment Farm Bui. 19, pp. 28-29. Colorado Bui. 12, p. 130. North Dakota Report, 

 1904, p. 35. South Dakota Bui. 40, p. 102. Wyoming: Bui. 76, p. 28; Bui. 87, p. 36. 



CALAMAGROSTIS CANADENSIS (Michx.) Beauv. 



Calamagrostis canadensis is a species that inhabits moist meadows of the northern 

 United States. It has some differences in the floral structure and on the whole is 

 somewhat less stout than C. langsdorfii. It is more erect, but of approximately equal 

 feeding value. 



No. 8863 was collected at Summit, Mont., August 15, 1907. The specimen was 

 cut before blossoming and at a height of 2 inches. Its percentage of moisture was 5.44. 

 Other constituents (on a water-free basis) were as follows: Ash, 6.92; ether extract, 

 2.15; crude fiber, 34.92; nitrogen-free extract, 46.88; protein, 9.13; pentosans, 26.29. 



CALAMAGROSTIS CANADENSIS ACUMINATA Vasey. 



Calamagrostis canadensis acuminata, the familiar purple-panicled reed-grass, has a 

 wide range of distribution in the United States, extending from Maine to California and 

 southward to North Carolina. It is one of the most important of the mountain grasses 

 in moist cool situations, along streams and lakes, and in mountain meadows. It 

 produces a fairly good quality of both hay and pasture, and its habit of growth is such 

 as to well adapt it to being cut for hay in places where it is sufficiently abundant for 

 this purpose. 



No. 8854 was collected at Summit, Mont., August 15, 1907. The specimen was 

 rather immature and a little under blossom. It 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. 



Calamagrostis canadensis: 





7.47 



2.86 



35.37 



45.71 



8.59 











Calamagrostis canadensis acu- 

 minata: 

 Our sample No. 8854 



5.98 



6.29 

 9.44 



2.70 

 2.57 



35.01 

 34.44 



46.82 

 45.02 



9.18 

 8.53 



22.96 













8.65 

 7.73 



2.61 

 2.81 



34.59 

 35.20 



45.46 

 45.66 



8.69 

 8.60 

















i Connecticut Report, 1879, p. 153. Iowa: Bui. 11, p. 462; Bui. 56, p. 512. 

 18S9, p. 38. Massachusetts Report, 1885, p. 97. South Dakota Bui. 40, p. 86 

 Bui. 87, p. 36. 



2 Montana Report, 1902, p. 66. Wyoming: Bui. 70, p. 22; Bui. 76, p. 35. 



82080°— Bull. 201—15 2 



Maine Report, 1888, p. 86; 

 Wyoming: Bui. 70, p. 21; 



