MANUAL OF THE GRASSES OF THE UNITED STATES 87 



ol nerved, the nerves prominent, 

 raised above the tissue of the 



ll 

 1 



; ii 



cm long, 6- to 12-flowered, the florets rather loosely imbricate; glumes 

 2 to 3 and 3 to 4 mm long; lemmas green or pale, about 4 mm long, 

 narrowed only slightly at the summit, scaberulous, 

 the paleas usually exceeding them. QJ. (Panicu- 



laria septentrionalis 

 Bickn.) Shallow 

 water and wet 

 places, Quebec to 

 Minnesota, south to 

 South Carolina and 

 eastern Texas (fig. 

 132). 



6. Glyceria flui- 

 tans (L.) R. Br. 

 MANNAGRASS. (Fig. 

 133.) Resembling 

 G. septentrionalis in 

 habit; first glume 

 usually only one- 

 third as long as the 

 first lemma ; lemmas 

 scaberulous, the 

 nerves distinct but 

 not raised promi- 

 nently above the 

 tissue of the inter- 

 nerves; tip of palea 

 usually exceeding its 



FIGURE 131. Glyceria septentrionalis. Panicle, 1 prn m o 01 (J^nvt^r 

 X 1; floret, X 10. (Beam 3184, Ind.) lemma. A {ramC- 



ulana jlmtans 



Kuntze; P. brachyphylla Nash.) Shallow water, 

 Newfoundland to Quebec and New York; South 

 Dakota; Eurasia. 



7. Glyceria occidentalis (Piper) J. C. Nels. (Fig. 

 134.) Culms flaccid, 60 to 100 cm tall; blades 3 to 

 12 mm wide, smooth beneath, somewhat scabrous 

 on the upper surface; panicle loose, spreading at 



an thesis, 30 to 50 cm long; 



spikelets, 1.5 to 2 cm long; 



first glume mostly about 2 



mm long; lemmas usually 



tinged with purple near the 



tip, 4 to 6 mm long, rather 



strongly scabrous, 7- to 9- 



M cm- 



internerves; palea about as long as its lemma, sometimes slightly 

 exceeding it. 9i (Panicularia occidentalis Piper. ) Marshes, shallow 

 water, and wet places, Idaho to British Columbia and northern Cali- 

 fornia (fig. 135). The seeds are used for food by the Indians. 



