SOME COLORADO GRASSES. 
ELYMUS AMERICANUS (V. & S.). 
Culms erect, leafy, smooth, 3 to 7 feet high; leaves 
ample, scabrous, glaucous; ligulc short, truncate; spike 
dense, cylindrical, 3 to 5 inches long; spikelets two at 
each joint of the rhachis, each three-flowered, 2 of them 
on short pedicils, the upper one imperfectly developed; 
outer glumes nearly equal, scarious margined, three-nerved,, 
scabrous, apex bristle tipped ; flowering glume rounded on 
the back, obscurely five-nerved above, finely scabrous, 
apex terminating in a rough, straight awn, much longer 
than the glume; palet equal, narrow, ciliate on the 
margins, apex obtuse. 
This promising species is abundant on the Arapahoe 
Pass, in rich soils where it is partially shaded by pines 
and quaking asp. 
ANALYSIS. 
Moisture_ 8.87 
Ash 
8.06 
Fat 
2.32 
Albuminoid nitrogen 
___ __ 12.86 
Crude fiber 
_ 19.79 
Nitrogen-free extract 
56.97 
Total 
100.00 
