740 GRAMINEA PHLEUM 
ALOPECURUS 
On dry plains, southern Oregon to the Eastern States. 
A. fasciculata Torr. Ann. Lyc. N. Y. i, 154. Glabrous: stems slen- 
der, erect, 1-2 feet high, often branched at the base: sheaths shorter than 
the internodes: ligules short, ciliate: leaves erect, 6 inches long, 1 line 
wide or less, flat, attenuate to a long point, smooth or svabrous: panicle 
3-7 inches long, at first strict, its branches finally more or less spreading: 
first glume linear 1-nerved, shorter than the second, 4-5 lines long: second 
one similar, about 6 lines long: flowering glumes about equalling the second 
one terminating in 3 nearly equal slender awns 6-8 lines long. On dry 
plains, Idaho to California and Kansas. 
24 PHLEUM L. Sp. 59. * 
Annual or perennial grasses with flat leaves and numerous 
spikelets in dense spicate panicles. Spikelets one-flowered. 
Glumes 3, the 2 lower ones empty, membranous, compressed, 
keeled, the apex obliquely truncate, the midnerve produced into 
anawn. Flowering glume niuch shorter and broader, hyaline, 
truncate, denticulate at the summit. Palet narrow, hyaline. 
Stamens 3. Styles distinct, somewhat elongated, with plumose 
stigmas. Grain ovoid, loosely enclosed by the glume and palet. 
P. pratense L. Sp. 59. Smooth or peeey so: perennial with bulbous 
roots: stems 1-4 feet high, erect, simple: sheaths usually exceeding the 
internodes, sometimes shorter, the upper ones long, and not inflated or 
very slightly so: ligules 1-2 lines long, rounded: leaves flat, 3-16 inches 
long, 2-3 lines wide, smooth or scabrous: panicle usually elongated, cylin- 
drical 1-7 inches long: empty glumes exclusive of the awns li lines long 
ciliate on the keel, the awn less than half their length: flowering glume 
very thin, truncate: palet equalling the glume. mmon in fields and 
waste places. 
P. alpinum L. Sp. 59. Smooth or nearly so perennial: stems erect, 
6-18 inches high, simple: sheaths often much shorter than the internodes, 
sometimes longer, the upper one usually much inflated: ligules about 1 
line long, truncate: leaves smooth beneath, scabrous above, the lower 2-3 
inches long, 1-4 lines wide, the upper one pew very short: panicle short 
and dense, ovoid to oblong, 44-2 inches long, 3-6 lines thick : empty glumes, 
exclusive of the awn 14 lines long, strongly ciliate on the keel, the awn 
about half as long as the body: flowering glume oblong. In wet meadows 
on high mountains, California to Alaska and across the continent. 
25 ALOPECURUS L. Sp. 60. 
Annual or perennial grasses with usually flat leaves and num- 
erous spikelets in dense spike-like panicles. Spikelets one-flow- 
ered, flattened. Empty glumes acute, sometimes short-awned, 
more or less united below, compressed, keeled, the keel ciliate or 
somewhat winged. Flowering glume obtuse ortruncate, hyaline, 
three-nerved, awned on the back. Palet hyaline, acute. Stamens 
three. Styles distinct or rarely united at base. Stigmas elon- 
gated, hairy. 
A. acrestis L. Sp. ed. 2, 89. Stems 1-2 feet high, erect, simple: 
sheaths shorter than the internodes: ligules 1 line long, truncate: leaves 
2-7 inches long, 1-3 lines wide, scabrous, especially above: panicle 144-4 
inches long, 2-4 lines thick: empty glumes united at base for about half 
their length narrowly wing-keeled, 2-21 lines long, the nerves smooth or 
