PESTUCEA 229 
253. Other economic species of Poa.—Compared 
with Kentucky blue-grass, the other species of Poa are of 
slight importance, although Can- 
ada blue-grass attains some im- 
portance locally (Par. 35). Of the 
other species 2 are advertised by 
seedsmen and are occasionally used 
in mixtures. 
Canada blue-grass (Poa com- 
pressa L.)—Culms wiry, flattened, 
with numerous creeping rhizomes, 
not tufted; panicles narrow, the 
branches in pairs. This resembles 
P. pratensis but is bluish green 
rather than dark green. Cultivated 
as a pasture-grass. Called also 
wire-grass and flat-stem. 
Rough - stalked meadow - grass 
(Poa trivialis L.)—This resembles 
P. pratensis but differs in the 
absence of rhizomes and in having 
scabrous sheaths and a long ligule. 
Sometimes cultivated as a meadow- 
grass. 
Fowl meadow-grass (Poa triflora 
Gilib.; P. serotina Ehrh.)—Culms 
1 to 4 feet high, tufted but with- 
out rhizomes; sheaths smooth; 
— 
= == 
Fic. 54. Poa pratensis. Plant, X14; spikelet 
and floret, X65. 
= Ms: Y 
4, gy x ee 
of, AY a 
SZ =<ag 
——S seni LAL ALE OL SAA ZL SS Ss 
