22 
SOME COLORADO GRASSES. 
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POA SEROTINA (Ehrh). 
(False Red Top; Fowl Meadow Grass.) 
Culms slender, smooth, 2 to 3 feet high; leaves 
narrowly linear, smooth, about six on the stem, 2 to 4 in¬ 
ches long; sheaths shorter than the nodes; ligule elong¬ 
ated, pointed; panicle slender, nodding, 4 to 10 inches 
long; branches in 5s, capillary, scabrous, 1 to 3 inches 
long; spikelets two to four-flowered; outer glumes narrow, 
very acute, rough on the keel; flowering glume obscurely 
five-nerved, pubescent on the keel and margins, apex 
bronzy, obtuse ; palet equal, acute. 
The species is abundant on the plains, esj)ecially near 
irrigating ditches. It is considered valuable where culti¬ 
vated. 
[See cut on opposite page.] 
POA (Species ?). 
Stems tufted, smooth, erect, from fibrous roots, about 
1 foot high; leaves flat, scabrous only on the margins, 3 
to 6 inches long, the sheath of the upper leaf enclosing 
the base of the panicle; ligule conspicuous, pointed; 
panicle slender, loose, 6 inches long; branches capillary, 
smooth, in 2s or 3s, distant, widely spreading, flower bear¬ 
ing only at the apex; spikelets three to four-flowered; 
outer glumes unequal, lanceolate, acute, rough on the 
keel, scarious margined, the lower one-nerved, the upper 
and larger three-nerved; flowering glume three-nerved, 
sparingly webby on the mid-rib and margins, apex obtuse, 
scarious; palet equalling the glume, obscurely two¬ 
toothed. 
This species occurs in the foothills in the shade of 
rocks, blooming in May and June. It probably has no 
value. 
