POACEAE 79 
61. P. dva ipie Plant glabrous: stem erect, 30-90 em. tall: panicle 
8—12 em. long, the branches n ng or AK dn Spikelets about 1.5 mm. 
long, m E or rarely glabrous. Autumnal phase reclining, the branches 
in sh uced. [P. oct . G. 
Sm . p. Fl. SE. U. 
pinelands, Coastal Pla ain and New “England Coast, Fia. : to Tex. and Me. 
Great Lake pcd N Ind. 
62. P. Lindheimeri Nash. Stem stiffly ascending or spreading 30-100 cm. 
tall: nodes eee leaf-sheaths glabrous or the lower pubescent: blades 5—10 
em. long, 6-8 wide, usuallf glabrous. Autumnal dog prs stiffly 
spreading or eR d acude the internodes elon um ate, with tufts of short 
appressed branches he nodes, the blades reduced, involute- -pointed, often 
eonspicuously x E base. —Dry woods, open grounds, and prairies, various 
provinces, Fla. to N. M., Calif., Minn., and Me. 
63. P. longiligulatum Nash. Stem relatively stout, s 0 em. Nec nodes 
iiie leaf-blades rather firm and thick, 4—8 cm. lon ng, 4-8 mm. wide, gla- 
brous above, m uberulent beneath: paniele 3-8 em. long: mde. 1. - 1.2 m 
long, Quse t. Autumnal Sid reclining, the branchlets crowded on spr oe 
ing B une. the bl dos reduced and subinvolute.—Low m Hed swamps, 
and ponds, Coastal Plain, Fla. to La. and N. €. 
64. P. Mis oar Nash. Stem erect or ascending, 25-45 cm. tall, appressed 
Ds -pilose: leaf-blades rather firm, 3—7 em. long, 3-7 mm. wide, glabrous 
above, puberule m beneath: panicle 3~8 em. long. Autumnal phase with ap- 
pressed pag branches the bia des not much reduced. [P. parvispiculum 
sh |—Low pinelands and cypress n often in acid E Coastal Plain, 
al to Ls and N. J.—(W. I.) 
65. P. Wrightianum s Stem weak and slender, ascending from a de- 
cumbent base, 15—40 c m. tall, minutely pubescent: leaf-blades 2—4 cm. long, 
t spreadin 
branched.— t soil, swamps, ponds, and | cypress Tedd, Coastal Plain and 
New England ¢ Coast, Fla. to Tex. and Mass —(W. IJ). 
66. P. auburne Ashe. Stem 20-50 cm. tall, geniculate, widely spreading, 
densely ey silky-villous below, Woo M D. copious d hairs inter- 
mixed diit leaf-sheaths villous: blades ong, 3-5 mm. wide: panicle 
s oc ong. Autumnal phase diffusely d prostrate pert form- 
ing ae mats, the branches curved upward at the ends — Sandy woods, Coastal 
Plain, Fla. to La., Ark., and N. Y. —Plants tufted. 
67. P. Thurowii Seribn. & Smith. Stem erect, 35-70 em. tall, the nodes 
bearded: MUR blades dp d Uc . long, 6-10 mm. wide, velvety be- 
e) 2 o e 7—11 em. long. aa phase erect, bearing at the middle 
few aad Bas DA .—Prairies and dry one woods, 
Coastal” Plain, Ala. to Tex 
68. P. lanuginosum Ell. Stem 40-70 em. tall, lige the nodes aaa 
usually with a girs ring balov: pus 6— 12 e . long, the axis pubescent, 
the lower branches often drooping. Autumnal a UE eading or pos 
spreading 
cumbent, freely bu hing. [P. ciliosum "Nash h]—Moist sandy woods, thickets 
and pinelands, mostly near the eoast, Coastal Plain, Fla. to Tex. and N. J. 
69. P. tennesseense Ashe. Plant somewhat bluish-green: stem erect or stiffly 
spreading, 25-60 cm. tall: leaf-sheaths spreading-pubescent: blades with a 
