56 
CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
as much as 30 cm. long, 2 to 6 mm. wide, rarely narrower; panicles rather few-flowered, 
‘ 
" 
Fia. 
the 1 
oblong, narrow, 10 to 20 cm., rarely 30 cm. long, about 
one-third as wide, the branches at first narrowly ascend- 
ing, somewhat spreading at maturity, the peduncle of 
the panicle not brittle and readily breaking as in P. 
capillare; spikelets long-pediceled, 3.1 to 3.5 mm. long, 
0.9 to 1 mm. wide, lanceolate, acuminate; first glume 
about one-third the length of the spikelet; second glume 
slightly longer than the sterile lemma, both 7 to 9-nerved, 
much exceeding the fruit, the palea of the sterile floret 
wanting; fruit 2mm. long, 0.9 mm. wide, elliptic. 
This species is distinguished from P. capillare by the 
36.—P, flerile. From type more slender culms, less dense pubescence, narrower 
specimen. blades, the narrow, less diffuse panicles and the longer, 
acuminate spikelets; and from LP. philadelphicum by 
arrow panicle and larger, acuminate spikelets. 
\ 
DISTRIBUTION. 
Sandy, mostly damp soil, meadows and open woods, Ontario to South Dakota, south 
to Florida and Texas. 
Ontario: Sarnia, Dodge 128, 130, Macoun 26332; St. Clair River, Dodge 124; 
Birch Island, Macoun 26331; Point Edward, Macoun 26330. 
PENNSYLVANIA: Lancaster County, Heller 701, 4777, 4786, Porter in 1862, Small 
in 1890 and 1892. 
Onto: Erie County, Moseley in 1895; Columbus, Werner 6777. 
InpDIANA: Clarke, Umbach in 1898. 
Inuinots: Chicago, Bebb 2928, Chase 
1474, 1479, 1729, 2006, Mill in 
1901; Ingraham in 1893; Beach, 
Umbach 2543; St. Clair County, 
Leggert 241. 
Micnican: Port Huron, Dodge in 
1909; Orion, Farwell 893; Jack- 
son County,*Wheeler in 1892. 
Soutn Daxora: Stearns, Wallace 
46. 
Towa: Cedar Rapids, Pammel in Fig. 37.—Distribution of P, flezile. 
1889 (Mo. Bot. Gard. Herb.). 
Missourt: Glenwood, Bush 3295; St. Louis, Eggert in 1875; Dodson, Bush 848; 
Eagle Rock, Bush 384; Noel, Bush 5259. 
District oF CoLuMBIA: Steele in 1896 and 1898. 
Virarnia: Four-Mile Run, Chase 5444. 
West Vrirarnia: Peters Mountain, Steele 281. 
Fiorina: Without locality, Curtiss in 1886. 
Kentucky: Bell County, Kearney 312. 
TENNESSEE: Knoxville, Kearney in 1893, Ruth 66; Johnson City, Canby 221; 
Cocke County, Kearney 960; Nashville, Gattinger in Curtiss N. Amer. Pl. 
3581 J, 3582a, and J. 
AtaBama: Monte Sano, Baker in 1897; Jackson County, Chase 4492. 
Mississippi: Starkville, Chase 4453, Kearney 72, 88 in part. 
ARKANSAS: Benton County, Plank 12, 107; Fulton, Bush 906. 
Texas: Clarksville, Plank 6, 10 in part. 
