182 BULLETIN 772, U. S. DEPARTMENT OF AGRICULTURE. 
times sufficiently abundant locally to be an important forage 
grass, and is not infrequently used for hay. The European 
form has 2-flowered 
spikelets. 
90. Spartina Schreb. 
Spikelets 1-flow-- 
ered, much flattened 
laterally, sessile and 
usually closely im- 
bricate, on one side 
of a continuous ra- 
chis, disarticulating 
below the glumes, 
the rachilla not pro- 
duced beyond the 
floret; glumes 
keeled, 1-nerved, 1) 
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Fig. 108.—Slough-grass, Beckmannia erucaeformis. 
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Plant, X 33 spikelet and floret, 
