212 GRAMINEAE. 
4. Panicularia elongata (Torr. ) Kuntze. 
Long Manna-grass. (Fig. 487.) 
Poa elongata Torr, Fl. U.S. 1: 112. 1824. 
ap rale Trin. Bull. Acad. Sci. St. Petersb. 1: 
Ramtatapen elongata Kuntze, Rey. Gen. Pl. 783. 1891. 
Culms 2°-3° tall, erect, simple, slender, smooth 
and glabrous. Sheaths often shorter than the in- 
ternodes; ligule 1/’’ long; leaves lax, 6’-12’ long, 
114’’-3/’ wide, long-acuminate, smooth beneath, 
rough above; panicle elongated, contracted, nar- 
row, usually nodding at the summit, 6/-12’ in 
length, the branches erect or appressed, 1/-2!4/ 
long; spikelets 3-4-flowered, 114//-2’” long; empty 
scales unequal, acute, I-nerved; flowering scales 
narrow, about 1’ long, obtuse or acutish, distinctly 
7-nerved. 
In wet woods, Newfoundland to Quebec and Minne- 
sota, south to North Carolina and Kentucky. Ascends 
to 4000 ft, in the Adirondacks. Aug.—Sept. 
5. Panicularia nervata ( Willd.) Kuntze. Nerved Manna-grass. (Fig. 488.) 
Poa nervata Willd. Sp. Pl. 1: 389. 1798. 
Glyceria nervata Trin. Mem. Acad. St. Petersb. (VI. ) 
T2365. _1831- 
Panicularia nervata Kuntze, Rev. Gen. Pl. 783. 1891. 
Culms 1°-3° tall, erect, slender, simple, smooth 
and glabrous. Sheaths often shorter than the in- 
ternodes, usually more or less rough; ligule 14// 
long, truncate; leaves 6’-12’ long, 2/’/-5/’ wide, 
acute, smooth beneath, rough above; panicle 3/—9/ in 
length, open, the branches filiform, spreading, as- 
cending or often drooping, rarely erect, 2’-5’ long; 
spikelets 3—7-flowered, 1’’-114’’ long; empty scales 
obtuse, 1-nerved; flowering scales about 3(’/ long, 
obtuse or rounded, with 7 sharp distinct nerves and 
evident furrows between. 
In wet places, Newfoundland to British Columbia, 
south to Florida and Mexico. Ascends to 4ooo ft. in 
Virginia. Panicle often purple. June-Sept. 
6. Panicularia Americana (Torr.) MacM. Reed Meadow-grass. ‘Tall 
Manna-grass. (Fig. 489. ) 
Poa aquatica var. Americana Torr. Fl. U. S. 1: 108. 
1824. 
Glyceria grandis S. Wats. in A. Gray, Man. Ed. 6, j 
667. 1890. ; : } 
Panicularia Americana MacMillan, Met. Minn. 81. : 
1892. : 
Culms 3°-5° tall, erect, stout, simple, smooth 
and glabrous. Sheaths loose, smooth, or some- t 
times rough; ligule 1’/-2’’ long, truncate; leaves 
7’-1° long or more, 3//-8’’ wide, usually smooth 
beneath, rough above; panicle 8/15’ in length, 
its branches spreading, ascending or rarely erect, 
4’-S’ long; spikelets 4-7-flowered, 2’/-3’’ long; 
empty scales acute, 1-nerved; flowering scales about 
1’’ long, obtuse or rounded at the apex, sharply 
and distinctly 7-nerved, the furrows between the 
nerves evident. 
In wet soil, New Brunswick to Alaska, south to Ten- 
nessee, Nebraska, Colorado and Nevada. Ascends to 
2100 ft. in Pennsylvania. June-Aug. 
