SOME COLORADO GRASSES. 
71 
DESCHAMPSIA FLEXUOSA (Beauv.). 
Stems smooth, slender, tufted, nearly naked, 1 to 2 
feet high; leaves bristle like, chiefly in radical tufts, 1 to 
4 inches long; liguio elongated, pointed ; panicle slender, 
spreading; branches in 4s or 5s, very smooth; 
spikelets two-flowered; outer glumes ovate-lanceolate, 
shorter than the florets, apex scarious, bronzy, the lower 
glume three-nerved at base, the upper and shorter one- 
nerved; flowering glume four-nerved, purplish, silky, 
hairy below, apex scarious, four-toothed; awn attached 
below the middle, finely ciliate, somewhat divergent, but 
not bent; palet shorter than its glume, two-toothed. 
This species on the east face of the Rocky Mountains, 
at high elevations. 
DESCHAMPSIA DAN TH ON IO IDES (Munro). 
Culms from 6 inches to 2 feet high; leaves narrow, 
very rough; sheaths also very rough, shorter than the 
nodes, twisted ; ligule elongated ; panicle densely flowered, 
spicate; branches in 5s, 1 inch long, flowered to the base; 
outer glumes equal, membranous, lanceolate, acuminate, 
much longer than the florets, the lower one-nerved, the 
upper three-nerved, both scabrous on the keel; flowering 
glume with a few short hairs at base, conspicuously five- 
nerved, apex two-toothed; awn exserted, attached and 
bent below the middle; palet hyaline, two-toothed. 
This grass was seen on the Arapahoe Pass, partly 
in the shade of pines, but not in any quantity. 
