90 



MISC. PUBLICATION 200, U. S. DEPT. OF AGRICULTURE 



13. Glyceria striata (Lam.) Hitchc. Fowl mannagrass. (Fig. 

 145.) Plants in large tussocks, pale green; culms 

 erect, slender, rather firm, 30 to 100 cm tall, some- 

 times taller; blades erect or ascending, flat or folded, 

 moderately firm, usually 2 to 6 mm wide, sometimes 

 to 9 mm; panicle ovoid, open, 10 to 20 cm long, nod- 

 ding, the branches ascending at base, drooping, naked 

 below; spikelets ovate or oblong, 3- to 7-flowered, 3 to 

 4 mm long, often purplish, somewhat crowded toward 

 the ends of the branchlets; glumes about 0.5 and 1 mm 

 long, ovate, obtuse; lemmas ob- 

 long, prominently 7-nerved, 

 about 2 mm long, the scarious 

 tip inconspicuous; palea rather 

 firm, about as long as the lemma, 

 the smooth keels prominent, 

 bowed out. Ql (G. nervata 

 Trim; Panicularia nervata 

 Kuntze.) — Moist meadows and 



wet places, Newfoundland to British Columbia, south 

 to northern Florida, Texas, Arizona, and northern Cal- 

 ifornia. A low strict northern form has been called G. 

 striata var. stricta Fernald (G. nervata var. striata 

 Scribn.) 



14. Glyceria elata (Nash) Hitchc. Tall manna- 

 grass. (Fig. 146.) Resembling G. striata; plants 

 dark green; culms 1 to 2 m tall, rather succulent; 

 blades flat, thin, lax, 6 to 12 mm wide; panicle oblong, 15 to 30 cm long, 



Figure 142.— Distribution of 

 Glyceria melicana. 



Figure 141.— Glyce- 

 ria melicana. 

 Panicle, X l; 2 

 views of floret, X 

 10. (Harvey 1322, 

 Maine.) 



•mf^-Kf 



Figure ]43.— Glyceria canadensis. Panicle, X 1; floret, X 10. (Kneucker, Gram. 464, Conn.) 



