SOME COLORADO GRASSES. 
73 
SPOROBOLUS DEPAUPERATUS (Vasey). 
Culms slender, tufted, branching from the ground,, 
geniculate below, 6 to 18 inches high; leaves setaceous, 
glabrate, 1 to 3 inches long; sheaths longer than the 
nodes; panicle linear, very narrow, 1 to 4 inches long, 
the terminal one sometimes included at base; branches 
in 2s or 3s, interrupted below ; outer glumes nearly equal, 
scarious; flowering glume somewhat scabrous, blackish 
above, and tipped with a short mucro; palet of same 
texture, nearly equal. 
This species grows in tufts, from numerous under¬ 
ground stems. It spreads rapidly in newly irrigated soils, 
forming a fine bottom for the taller Agropyrums. It is a 
desirable grass for meadows. On dry hill-sides it attains 
a height of about 6 inches. 
SPOROBOLUS ASPERIFOLIUS (Thurb). 
Culms 2° high, smooth, purplish, robust; leaves long, 
alternate, minutely scabrous on the margins; panicle 
spicate, purplish, included at base, 3 to 6' long; branches 
in 2s or solitary; outer glumes unequal, somewhat scab¬ 
rous on the strong nerve. 
