610 FLORA OF TEXAS. 



eqnal-sided, mostly awned ; pcilem of the same texture as 

 tlie glumes, tlie lower convex on the back, tapering into a 

 rigid awn, the upper inclosing the linear hairy-tipped 

 grain ; stamens 3 ; stigmas 2. 



E. YiRGixicus, L. Spike dense, erect (3' long), the 

 base usually included in the dilated sheath of the upper- 

 most leaf; spikelets 2-3 in a cluster, 2-3-flowered, smooth- 

 ish, sliort-awned ; glumes lanceolate, strongly nerved. 

 River-banks. July and August. Culms 2°-3° high ; 

 leaves rough ; sheaths smooth. 



E. Canaden-sis, L. Culm erect, 3°-5° high; leaves 

 lance-linear, flat, smooth, dark green, or often glaucous ; 

 sjnke rather loose and spreading, 4-8' long, generally nod- 

 ding ; rachis hairy ; spikelets more or less hairy, in twos 

 and threes, 3-6-flowered ; aw7is of the flowers usually 

 curved, longer (7"-17") than those of the glumes. — A 

 tall grass, looking like rye, with long recurved, waving 

 sjrilces. Red River, 



HORDEUM. Barley. 



SjnJcelets 3 at each joint of the rachis, 1-flowered, the 

 lateral ones sometimes abortive; glumes 2, subulate, nearly 

 equal, awned; paleo) 2, lower lance-ovate, long-awned, 

 upper obtusely acuminate ; caryopsis adhering to the palese. 



H. JUBATUir, L. {Squirrel-tail Grass.) Culm, slender, 

 round, smooth, simple, about 2° high ; leaves broad-linear, 

 4'-C' long, rough-edged, otherwise smooth, as well as the 

 sheaths; spikes 2-3' long; spikelets with the lateral flowers 

 neuter; glumes andpalece produced into fine, smooth awns, 

 6 times as long (2') as the flowers; abortive flowers on short 

 pedicels. Marshy places. Northern Texas. June. 



H. pusiLLU^r, ISTutt. Culm 4-6', decumbent or genicu- 

 late at the base; leaves about 1^' long, rather obtuse, glau- 

 cous, striate; 2i2)per sheath turned, embracing the spike; 



