543 
10, BE. pilosa(Ll.) Beany. Culms 2 to5dm. high, rather weak: leaves usually pilose 
at the ligule: panicle 1 to 2 dim. long, diffuse; branches 5 em. long or less: spikelets 3 
to 6 mm. long, 4 to 8-flowered; tlorets rather loose on the elongated rachilla; empty 
glumes unequal, about one-half as long as the contiguous florets; floral glume nearly 
smooth, subacute, slightly exceeding the smooth palet: grain oblong, smooth, nearly 
1mm. long.—Texas to Minnesota and eastward to Maine and Florida, (The intro- 
duced form, common along the eastern coast, can not be distinguished from the native 
form which has been called F. Purshii Sehrad.) 
11. E. major Host. (PUNGENT MEADOW GRASS.) Culms 2to5dm. high, leafy: leaves 
flat, 4to8mm, wide: panicle rather densely flowered, oblong, 1 to 2. dm. long: spikelets 
sessile or short-pedicelled, 6 to 15 mm. long, 6 to 20-flowered ; upper empty glume some- 
what 3-nerved; flora] glumes obtuse, prominently nerved, one-fourth longer than the 
ciliate palet: grain subglobose, 0.8 mm. in diameter.—Introduced everywhere in the 
United States and northern Mexico, 
+ + Spikelets flatly compressed, sessile. 
12. B.glomerata (Walt.) Culms4 to&8dm. high, erect orascending: panicle narrow, 
rather dense, 1 to 3 dm. long; branches niimerous, subverticillate: spikelets 6 to 
5) 
10-flowered, about 3 mm. long; florets about 1mm. long; glumes all-acute; floral 
glume one-fourth longer than the palet; grain broadly spindle-shaped, nearly 0,5 mm. 
long. (Poa glomerata Walt. Poa conferta Ell. Eragrostis conferta Trin.)—Sandy 
river banks, central Texas to Florida. 
** * Panicle composed of more or less crowded clusters of sessile flatly compressed 
spikelets. 
+ Culms upright. 
13. B. interrupta (Nutt.) Trelease. Culms 3 to6dm, high, usually simple: panicle 
subspicate, interrupted : spikelets pale green, usually variegated with red and purple, 
5 to 20 mm.long, 5 to 30-ilowered ; glumes all very acute; upper empty glume more or 
less distinctly 3-nerved: grain terete, smooth, nearly 1 mm. long. (Poa interrupta 
Nutt. Lragrostis orylepis Torr.)—Dry sandy hills, especially near the nests of the red 
ants, Texas to Arizona and eastward along the Gulf coast to Florida. 
+ + Culms creeping. 
14. EB. hypnoides (Lam.) B.S. P.) (CREEPING MEADOW GRASS.) Culms more or 
less fasciculately branched, 5 to 15cm, high: leaves short, usually divaricate: spike- 
lets crowded in subeapitate clusters, 10 to 20-flowered, 1 em. long or less: grain 
globose, 0.5 mm, in diameter. (Poa hypnoides Lam, Poa reptans Michx. Lragostis 
replans Nees. )—Low wet land, throughout the United States and Mexico. 
61. HATONIA Raf. 
Spikelets usually 2-flowered, with a naked pedicel-like rudiment, 
compressed, cuneate, awnless, perfect, numerous, short-pedicelled or 
nearly sessile on the verticillate branches of the rather slender panicles ; 
rachilla smooth, articulate above the thin herbaceous empty glumes, 
first empty glume narrowly lanceolate, 1-nerved; second empty glume 
broad, obovate, 3-nerved; floral glume lance-oblong, herbaceous with 
membranaceous margins, nearly smooth, indistinctly 3-nerved, slightly 
exceeding the very thin palet: grain lance-oblong, yellow, nearly opaque. 
Erect grasses with slender simple culms and usually flat puberulent 
leaves. 
