POACEAE 131 
ll: PR. biet Seribn. Stem slender, 50—100 em. tall: leaves mostly basal, 
blades wide: panicle 8-15 em. long: spikelets 2—4-flowered, 5-6 m 
lon ng: à mmas peres nerved, the keel and marginal nerves Pubs cup code 
various provinces, Tenn. (?), Ill. to Minn.—Specimens from Tenn. seem to be 
lacking. 
ICULARIA Heister. Usually tall aquatic or marsh perennials, 
with Pu ed closed or partly closed sheaths, and open or contracted panicles. 
Spikelets few- to many-flowered, subterete or slightly compressed, the rachilla 
disarticulating above the glumes and between the florets; glumes unequal, short, 
obtuse or acute, usually scarious, mostly 1-nerved; lemmas broad, convex on the 
back, firm, usually obtuse, awnless, scarious at apex, 5- to 9-nerved, the nerves 
parallel, usually prominent. [Glyceria R. Br.]—Thirty-five species, in the tem- 
perate regions of both hemispheres.—MANNA-GRASSES. | MEADOW-GRASSES. 
FOWL MEADOW-GRASSES. 
Spikelets narrow, mostly linear, usually more than 1 cm. long. I. C NM 
Spikelets ovoid or oblong, usually not over 0.5 cm. long. II. OBT 
I. ACUTIFLORAE 
Lemmas obtuse, about as long as the palea 
^i. P. septentrionalis. B 
Lemmas acute, much exceeded by the Gea ne 
^2; P. acutiflora. 
II. OBTUSAE 
Panicle contracted, narrow. 
Lemmas about 3 mm. long: panicle oblong, dense, usually 
not over 10 em. long. 3. P. obtusa. 
pne about 2 mm. long: panicle linear, 15-30 em. long, 
4. P. melicaria. 
Panicle « opum lax 
Glumes mend “rounded, the first about 1 mm. long or less:. 
lemmas about 2 mm. long. 
5. P. striata. 
cunn e the first 1.5-2 mm. long: lemmas about 3 
Spikelets ‘elliptic, pointed, pale: plant weak or lax, 
ka ually E ng and rooting at the oe panic cles 
uall Scr 15 em. long, few-flowered. €. P. pallida. 
Spikelets oblong, purple: plant upright, ee panicle 
many-flowered. . P. grandis. 
1. P. septentrionalis (A. Hitche.) Bicknell. Stem 1-1.5 m. tall: panicle 5-6 
em. long, the short branches QU a spreading: spikelets 1.5-2 em. long 
lemmas 4—4.5 mm. long, faintly 7-nerved, 
M on gos betw T a "T : 
fluitans (FI. U. S. )]—(SwEET-GRASS, 
F'LOTE-GRASS. \ Shallow water, various 
provinces, S. C. to Tex., Minn., and Mass 
2.. E. oe (Torr.) Kuntze. Stem 
weak, slender, much as ps em. long: 
paniele nearly Ele 15-35 cm. long, the 
RA ua. appressed EB 0—12- 
flowered, 2—4 ong: lemmas 6-8 mm. 
ee scabrous. T utiflora E "d 
low water, various prance Tenn. 
Ind., and N. H. 
P. obtusa ue saan Stem se erect, 30— 120 as tall: panicle 6-18 
m. long: spikelets 3—7- flowered, 5-6 m . lon ng. [G.o a Trin.]—Bogs and 
udo often in acid soil, Coastal Plain and adj. ip N. C. toN 
