T hi: (in A ss i:s « » i- Tk n n khs k k. 1 13 



Found on Roane Mountain, July 29, 1889. Common in the New 

 England and Middle States. 



4. Glyceria pallida Trin. 



lMat«- XXXIX. l<i-ur.' I.V.. 



A perennial with slender steins one to three feet long, ascending 

 from a more or less decumbent base. Sheaths smooth; liguleone to 

 two lines long; leaf-blade one to two lines wide, two to six inches 

 long, scabrous, acute. Panicle three to six inches long, lax, the 

 few-rtowered branches ascending. Spikelets rather narrowly ob- 

 long, three to four lines long, loosely four- to nine-flowered; 

 empty glumes ovate, the second three-nerved, about one line long, 

 a little exceeding the one-nerved lower glume; flowering glumes 

 one and one-half lines long, minutely dentate at the obtuse apex; 

 distinctly seven-nerved. Palea lanceolate, two-toothed. 



Wet places, margins of slow streams, ponds, etc. Reported by 

 r)r. Gattinger as growing in a bog, near Ducktown. 



5. Glyceria fluitans R. Br. Manna grass. 



Plate XXX rX. Fi*,nire 156. 



An erect grass three to five feet high, with somewhat flattened 

 culms, long leaves and a narrow panicle a foot long. Lower pani- 

 cle-branches finally spreading. vSpikelets linear, cylindrical, one- 

 half to one inch long, seven- to thirteen-flowered; empty glumes 

 broad, hyaline, faintly nerved near the base, the first about one 

 and one-half lines long, the second a little longer; flowering 

 glumes about three lines long, seven nerved, scabrous, obtuse, 

 eatire at the apex or obscurely toothed. 



In swamps and wet muddy places. June— August. 



This grass is widely distributed over the world. It makes ex- 

 cellent fodder and is valuable for swampy meadows. In some 

 parts of Europe the grain is gathered and used for food. 



^. Glyceria acutiflora Torr. 



Plate XL. Figure 157. 



A low perennial with ascending stems one to two feet high, and 

 narrow few-flowered panicles. Sheaths mostly smooth, closed 

 for a part of their length. Panicle narrow, the erect branches 

 mostly in pairs, one very short and bearing a single spikelet, the 

 other elongated and bearing one to three spikelets. Spikelets one 

 to one and one-half inches long, five- to twelve flowered. Empty 

 glumes unequal, the first about half the length of the second; 

 flowering glumes lanceolate-acute, three to four lines long, seven- 

 nerved and minutely roughened on the back. Palea narrow, 

 acuminate and bidentate or cleft at the apex, much exceeding the 

 floral glume. 



Ponds near Nashville, (Gattinger). 



56. FESTUCA Linn. Sp. PI. 73. 

 Spikelets several-flowered, pedicellate, in narrow and dense or 



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