72 POACEAE 
but with dits secondary panieles more or less concealed among the basal 
leaves.—Open sterile woods, fields, and rocky slopes, various provinces, Ga. to 
Tex., Minn., d Me. 
33. P. linearifolium Scribn. Stem 20-45 = tall, not stiff : res M cns 
nicle 5— 
papillose-pilose: blades a i em. long, 2 wide: pani 10 e 
Autumnal phase with small panicles xem the bl leaves —Dry ood hill. 
sides, fields and thickets, po provinces, Ga. to Tex., Minn. and Me. 
34. P. laxiflorum Lam. ae slender, 20-60 em. tall, erect, or geniculate at 
base: leaf-blades me em. long, 7-12 mm. wide. panicle 8-12 em. long, lax, 
add E ed, the branches us spreading, the lower often bp iid Au- 
1 phase aca branched at base , forming a soft spreading mat, with 
EM secondary panicles intermixed.  [P. pyriforme Nash] Rich puc 
Coastal Plain, Fla., Ga., and Ala. 
35. P. xalapense H. B. K. Resembling P. laziflorum; differing in the pilose 
and ciliate leaf-blades and somewhat smaller (2 mm.) pp 2 ovoid 
more compact panicles and somewhat smaller Pe NA about 1 . long, 
in P. xalapense strictirameum. . to La.) [P. lami m ( Fl. U. S. 
Open woods, pinelands, hammocks, and rocky fields, see iat eed T 
Tex., Mo., and Md. (T. I., Mex.) 
36. P. ciliatum Ell. Stem 5-30 em. tall, ereet or UA wis leaf-blades ud 
em. long, 83-8 mm. wide, conspicuously ciliate: panicle em. long, the axi 
pilose. ‘Autumnal phase a soft flat mat. Low inclands, Gpaştal Plain, Fla. 
to La. and N. C. 
37. P. polycaulon Nash. Resembling P. ciliatum: dis piii the axis 
sparsely pilose: spikelets a about 1.5 mm. long, rarely as m . long. 
Low pinelands, and prairies, Coastal Plain, Fla. to Miss. c. I. 5 
38. P. strigosum Mu hl. Resembling P. ciliatum: panicle-axis and branches 
D spikelets 1.3-1.5 mm. long. Sandy woods and pinelands, Coastal Plain, 
Fla. to La., Tenn., and Va. (W. I., Mex.) 
39. P. chrysopsidifolium Nash. Stems ascending or spreading, 30—45 
tall: leaf-blades 5-10 em. long, 3-5 mm. wide, conspicuously pointed, villous 
on both surfaces: panicles 4—6 cm. long, the flexuous br ines ascending o 
spreading: oe elets villous. Autumnal phase forming mats, the blades 13 
em. long, 1.5 mm. D papery.—Sandy pinelands and ad Coastal. Plain, 
Fla. to La.—(W. I.) 
40. P. consanguineum Kunth. Stem ascending or is 20-55 « em. tall, 
densely pode below: leaf-blades erect, 7-11 cm. long, 5- wide: 
panicles 4-8 em. long, the lower branches factnm ascending. 
phase sp eading or hp wai t, the numerous branches somewhat flabellately 
fascicled, the blade em. long, 2-3 mm. wide.—Sandy pace lands an 
meadows, Coastal Plain, “Tia, to Tex. and Va. 
41. P. angustifolium Ell. Stem erect, 30-55 cm. tall, ed lowermost inter- 
nodes gray crisp-villous, the upper r glabrous: panicle 4-12 cm. lo ong: spikelets 
2.5-2.8 mm. long, papillose-villous. Autumnal phase stiffly uenis or some- 
what toph -reclining, not mat-like: blado y very numerous.—Sandy! woods 
and pinelands, Coastal Plain and adj. provinces, Fla. to Tex. and Pa. 
49. P. fusiforme A. Hitche. Vernal phase similar to that of P. angusti- 
folium: stem 30-70 cm. tall: lower leaf-blades softly pubescent beneath: 
