GRAM I N ACL A K 



Wena i 

 ■ i ..i ... .- , 



1. Lemma with a ring of hair- ai the base, awi 



2. Lemma without a ring oi hairs, awn less than 



FESTl l 



1. Tall reed-like swamp grass, spikelets with long silkj 



2. Lower meadow or woodland grass, s 



a. Spikelets 8 12 mm. wide, ali.mt as long as broad 

 1.. Spikelets less than 8 nun. wide, longer than 



(1) Panicle dense ami spike-like, shining 



(2) Panicle open, no( shining 



(a) Spikelets in one sided, capitate i ' 



(b) Spikelets nol i ollei ted into one sided 



large 

 x. Lemmas inure than <> mm. long, ' 



near the apex 

 y. Spikelets smaller; lemmas less than "6 nun. long, 

 awned at the apex 

 (x) Spikelets 3-5-flowered 

 in. Glumes compressed and keeled; lemma mostlj with 



hairs at the base, aw nless 

 n. Glumes rounded, at least at the base; lemma withi il 

 mostly awned at the apex 

 (y) Spikelets 5-30-flowered, much ll 



Phragmites —Reed grass 



(Gr. phragmites, growing in hedges; ol doubtful appUc 

 A single swamp species, 4-8 feet tall 







A single cultivated specii s 



I li'i/a Quaking < Irass 



ii ;r. brizo, a kind of grain i 



A single species 



Koeleria Koeleria 



i Named for Koeler, a < ;• ■ ma < 



I (act) lis • >rchard l 



(Gr. daktylos, finger, of doubtful .i 



single introduced species 



Bromus 



a'.v. bromos, a kiml • •: 



1. Spikelets densely silky hairy all over 



2. Spikelets not densely silky hairy all over 



a. Lemma awned, awn over 1 'in. long 



b. Lemma awnless or with an awn less than 1 i ill. long 



(1) Lemma awnless or merelj awn-pointed 



(2) Lemma with a shorl straight awn 



Poa Bluegrass 



i i 



1. Low, spreading annual, less than 2 dm. high 



2. Perennials; stem erect, over .^ dm. 



a. Stems not tufted, from extensive!) creeping i 



1>. Stems tufted 



(1) Panicle crowded; stems much exceeding lh< l< 



(2) Panicle open and spreading; sterna 



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