88 



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



firm, faintly nerved, smooth, 3 to 4 

 mm. long, obtuse, the scarious tip 

 narrow, often revolute. % — Bogs 

 and marshy places, Nova Scotia to 

 North Carolina, mostly near the 

 coast. 



Figure 97. — Glyceria obtusa. Panicle, X 1; 2 views of 

 floret, X 10. (Miller, N. Y.) 



12. Glyceria melicaria (Michx.) 

 Hubb. (Fig. 98.) Culms slender, soli- 

 tary or few, 60 to 100 cm. tall; blades 

 elongate, scaberulous, 2 to 5 mm. 

 wide ; panicle narrow but rather loose, 

 nodding, 15 to 25 cm. long, the 

 branches erect, rather distant; spike- 

 lets 3- or 4-flowered, about 4 mm. 

 long, green; glumes about 1.5 and 2 

 mm. long, acutish; lemmas firm, 2 to 

 2.5 mm. long, acutish, smooth, the 

 nerves rather faint. % (G. torrey- 

 ana Hitchc; Panicularia torreyana 



Merr.) — Swamps and wet woods, 

 New Brunswick to Ohio, south to the 

 mountains of North Carolina. 



13. Glyceria canadensis (Michx.) 

 Trin. Rattlesnake mannagrass. 

 (Fig. 99.) Culms erect, solitary or few 

 in a tuft, 60 to 150 cm. tall; blades 

 scabrous, 3 to 7 mm. wide; panicle 

 open, 15 to 20 cm. long, nearly as 

 wide, the branches rather distant, 

 drooping, naked below; spikelets 

 ovate or oblong, 5- to 10-flowered, 5 

 to 6 mm. long, the florets crowded, 

 spreading; glumes about 2 and 3 mm. 

 long; lemmas 3 to 4 mm. long, the 7 

 nerves obscured in the firm tissue of 

 the lemma; palea bowed out on the 

 keels, the floret somewhat tumid. 91 

 — Bogs and wet places, Newfound- 

 land to Minnesota, south to Virginia 

 and Illinois. 



Glyceria canadensis var. laxa 

 (Scribn.) Hitchc. On the average 

 taller, with looser panicles of some- 

 what smaller 3- to 5-flowered spike- 

 lets. % {Panicularia laxa Scribn.) 

 — Wet places, Nova Scotia to New 

 York, Michigan, Wisconsin, Mary- 

 land, West Virginia, North Carolina, 

 and Tennessee. 



P^7r- , — ^ 



^n. J jmy 



tvrfw 



-\ 1 \ y 



^"w 



LlA.-T 



Figure 98. — Glyceria melicaria. Panicle, X 1 ; 2 views 

 of floret, X 10. (Harvey 1322, Maine.) 



