POACEAE | 73 
panicle long-exserted. Faroe phase ereet or reclining, for rming dense 
bushy clusters 30—60 cm. tall.—Sandy pinelands and peru Coastal Plain, 
Fla. to Miss. and Ga.— “Ww . I.) 
E P. caer Griseb. Stem stiff, 30-60 cm.: leaf-blades erect or ascend- 
ing, 3-5 mm. wide: panicles 5-9 em . lon ng: spikelets 2 mm. long, finely papil- 
lose- Redon Autumnal phase slender ——Prairies, open woods and pin 
lands, Coastal Plain, Fla. to Miss.—(W. I.) 
44. P. ovinum Seribn. & Smith. rap erect, bm em. por leaf-blades erect 
or Raed lens the lowermost as much as 1 em. wide: panicle 5-9 cm. long, 
three-fourths as wide: spikelets slightly over ? mm. Io ong, minutely E 
P Autumnal leaf-blades not much reduced.—Dry or moist grounds, 
oods and nude Coastal Plain, Miss. to Tex. and Ark —(Me x.) 
2 ae rip Ashe. s mostly erect, 30—50 cm. tall: leaf-blades 
: panicle 4—6 cm. long: spikelets papillose pubescent Autumnal 
d pep een eret or topheavy.—San 2| pinelands, sand-dunes, and 
woods, Coastal Plain, Fla. to Tex. and N. C.—(W. I., C. A.) 
46. P. aciculare Desv. Stem ascending, 20—50 em. tall: ip blades stiff, 
viia e or oe nding, narrowed to an involute point, 2-5 mm. wide: panicle 
open m. long, the flexuous Dan spreading. Autu nal phase TR 
ee 10-30 em. long, spreading and forming dense. SUE the blades 
1-3 em. "lon ng. [P. arenicola Ashe]—Sandy woods and pinelands, Coastal 
Plain, Fla. to Tex., Okla., and N. J.—(W. I.) 
47. P. Bicknellii Nash. Stem erect, 30-50 cm. tall, glabrous, or puberulent 
toward base: nodes sparsely bearded or glabrous: c i aths glabrous or 
nearly so: blades stiff ascending, 8-15 cm. long, 3-8 . wide, the upper- 
most usually longest: n ovoid, 5-8 em. long, the ge anches pnt 
spikelets 2.3-2.8 mm. pua sparsely aoe rarely Sean us. Autumn 
phase erect, branching from middle nodes, ing a e bushy crown a 
stiffly ascending blades. [P. ne DATUM. hes —Dry ph or acid woods 
and hillsides, various provinces N of Coastal Plain, Ga. to Mo. and Conn 
48. P. nudicaule Vasey. Stem erect from a spreading base, 40—60 em. tall, 
glabrous: panicle long-exserted, 4—7 em. long.—Swamps, Coastal Plain, W Fla. 
and S Ala. | 
49. P. microcarpon Muhl. Stem erect, or geniculate at base, usually 60—100 
em. tall: id pur» pu E the low ermost pubescent: ae des iis ge 
wide: panicle 8—12 long, the branches ascending. Autumnal ined | 
peatedly EI pon all the ae reclinin mg i Us the eem of the denen 
mass: leaf-blades and panicles reduc ed. [P. barbulatum (Fl SE. U. S.)]— 
Wet woods, marshy places, swamps, hillsides, ind thickets, various provinces, 
Fla. to Tex., Mo., and Mass. 
50. P. annulum Ashe. Stem usually purplish, sin em. tall: leaf- E i 
eer or the upper nearly glabrous: blades 7-13 m wide: panicle 6-8 e 
long: spikelets mm. lon Autumnal phase pes bearing few er rect 
branches at the upper nodes —Dry woods, Piedmont and rarely ius margin 
of Coastal Plain, Ga. to Miss. an nd N. J. 
. P. nitidum Lam. Stem erect, 30-60 cm. tall, sometimes taller: leaf- 
agen poseen or the lower pubescent, unis or glandular: blades 5—10 
wide, glabrous: panicle 5-8 cm. long, the and the ascending branches 
viscid. -spotted. Autumnal. phase aa or ae ere from the egt of the 
