SOME COLORADO GRASSES. 
117 
ARISTIDA BASIRAMEA (Engelm). 
Culms leafy, erect, slender, over 1 foot high; leaves 
nearly 1 foot long, sparingly hairy on the margins; 
sheaths softly pubescent; ligule almost obsolete; panicle 
loosely flowered, 3 to 4 inches long, its base enclosed by 
the upper sheath; outer glumes linear, one-nerved, long 
awned; flowering glume terete, blackish, sparingly hairy 
at the obtuse or acute callus, apex three-awned, the 
middle one 1 inch long. 
Abundant near the foothills, in dry soil. 
ANALYSIS. 
Moisture_ 9.16 
Ash_ 10.09 
Fat_ 2.29 
Albuminoid nitrogen_ 4.06 
Crude fiber_16.28 
Nitrogen-free extract_67.28 
Total_100.00 
CENCHRUS TRIBULOIDES (L.). 
(Sand Burr; Burr Grass.) 
This weedy, troublesome grass occurs only in loose, 
open soils. It is particularly abundant near Canon City. 
The culms are spreading, 1 to 2 feet long, yielding quan¬ 
tities of prickly burrs, which adhere to the bodies of 
animals, especially sheep. 
ANALYSIS. 
Moisture 
No. 1. 
_ 9.45 
No. 2. 
7.50 
Ash - 
- 9.24 
10.96 
Fat 
_ 3.60 
2.15 
Albuminoid nitrogen 
_ 10.53 
6.58 
Crude fiber 
- 14.14 
16:69 
Nitrogen-free extract- 
_ 60.49 
63.62 
Total 
-100.00 
100.00 
