86 



Misc. PUBLICATION 200, rj, S. DEPT. OF AGRICULTURE 



glumes obtuse, the first 1.8 to 2.2 

 nun. long, the second .'* to 3.5 nun. 

 long; lemma 4 to 5 nun. long, sca- 

 brous, 7-nerved, obtuse, irregularly 

 dentate; palea about as long as the 

 lemma, the keels narrowly winged. 



- 1 ! - Moist canyons and meadows, 



Nevada and California; New York 

 (Long Island); Europe, whence prob- 

 ably introduced. 



Section 2. Hydrop<5 \ num. 



Spikelets more or loss laterally com- 

 pressed, ovate to oblong, usually 

 not more than 5 nun. long; pan- 

 icles open or condensed, but not 

 long and narrow (except in G. 

 melicaria), 

 \). Glyceria grandis S. Wats. 

 American mannagrass. (Fig, 95.) 

 Culms tufted, stout, 1 to 1.5 in. tall; 

 blades Hat, ti to 12 nun. wide; panicle 

 large, very compound, 20 to 40 em. 

 long, open, nodding at summit; 

 spikelets 4- io 7-flowered, 5 to mm. 

 long, glumes whitish, about 1.5 and 

 2 nun. long; lemmas purplish, about 

 2.5 nun. long; palea rather thin, about 

 as long as the lemma. 91 (Panicu- 

 laria americana MacM.) — Banks o( 

 streams, marshes, and wet places, 

 Prince Edward Island to Alaska, 

 south to Virginia, Tennessee. Iowa, 

 Nebraska, New Mexico, Arizona, 

 and eastern Oregon. 



I'naui- '.>;;. Glycerin occidental is. Paniole, X 1; floret, 

 X U). (Type.) 



northern California and Nevada. The 

 seeds are used tor food by the 



Indians. 



8. Glyceria declinata Bre'biss. (Fig. 



94.) Culms 15 to 70 cm. tall, erect 

 from a decumbent branching base; 

 sheaths open, keeled, scaberulous, the 



margins thin and hyaline; ligule 5 to 



7 nun. long; blades 3 to 12 em. long, 

 2 to mm. wide, the tip boat-shaped; 

 panicle simple, to 25 cm. long; 



spikelets 15 to 20 mm 



Ion: 



appressed; 



Figvre 94.— Glyceria declinata. Plant, X IMlorot. \ 10 k Cooke i;>;Ul\ Calif.) 



