31 
than 1 line long, smooth, oblong, acutish, the lower glume ovate, acute or acutish, 
nearly half as long as the spikelet, fertile Hower shorter than the spikelet. 
35. P. neuranthum Griseb. (Pl. Cubens. p, 232), Erect or ascending, about 1 
foot high, slender, smooth; leaves linear-acuminate, 2 to 4 inches long, firm, flat or 
subinvolute; terminal panicle long exserted, L to 2 inches long, with few-flowered, 
divergent branches, the lateral panicles numerous, narrow, short (less than 1 inch 
long), oval, pubescent; lower glume minute, deltoid, nearly nerveless, one-third to 
one-fourth as long as the spikelet, second and third 7-nerved, equaling the fertile 
flower, which is ovoid, obtuse, and smooth, 
Var. RAMOSUM Griseb. Ascending, much branched, leaves flat or involute, very 
narrow ; spikelets 1 line long, elliptical, obtuse.—South Carolina, Florida, to Texas. 
36. P. Joorii Vasey. Culms about | foot high, much branched above, very leafy ; 
leaves 4 to 6 inches long, 6 to 10 lines wide, thinnish, smooth, those of the extreme 
branches smaller; panicles numerous, small, inclosed in the sheaths, few-flowered ; 
spikelets oblong, over 1 line long, sparsely pubescent.—Louisiana (Dr. J. F. Joor) and 
Mississippi (S. WM. Tracy), 
This is very unusual in its abundant large leaves and condensed form, growing in 
dense tufts. 
37. P. nudicaule Vasey. Culms 14 to 2 feet high, slender, with 2 or 3 long inter- 
nodes; leaves mostly near the base, linear-lanceolate, 2 to 4 inches long, 2 to 3 lines 
wide, smooth, light green, the 2 to 3 culm-leaves distant, narrow, giving the culma 
naked appearance ; panicle long exserted, small, smooth, 2 to 3 inches long, Linch wide, 
sparsely flowered, branches alternate; spikelets elliptical-oblong, acute, 1} lines long, 
smooth, the slower glume very small (one-fifth as long as the spikelet); second glume 
7-nerved; third, 5-nerved; fertile flower one-fourth shorter than the spikelet.— 
Swamps, Santa Rosa County, Florida (A. H. Curtiss), 
38. P. consanguineum Kth.(Gray’s Manual,6th ed., p.633) (P. villosum Ell.) .Culms 
about 14 feet high, erect, branching in age; leaves linear-lanceolate, mostly about 3 
inches long, 2 to 5 lines wide, the later ones almost filiform, somewhat pubescent, 
sheaths villose; panicle 2 to 3 inches long, open, rather thin; spikelets 1 to 1} lines 
long, pubescent.—South Carolina to Florida. 
39. P. scoparium Lam. (Gray’s Manual, 6thed., p. 632). (P. pauciflorum E11.) 
Culms erect, becoming branched and reclining, 1 to 2 feet high, somewhat scabrous; 
leaves erect, about 3 inches long, 4 to 5 lines wide, faintly nerved, scabrous on the 
margins, hairy fringed near the base, the sheaths bristly with stiff spreading hairs 
or smoothish; the panicle 2 to 3 inches long, spreading, open, branches smooth, 
_mostly simple, alternate, rather few-flowered; spikelets 14 to 1% lines long, oval to 
obovate, hairy or smoothish; lower glume about one-third as long as spikelet.—New 
England to California and southward. A widespread species, 
Var. MAJOR (P. scoparium Ell.). This differs from the preceding in its stouter, 
rougher culm, larger leaves, 4 to 6 inches long, three-fourths of an inch wide (1 to 14 
inches wide, Elliott), soft-pubescent below, and its spikelets 2 lines long.—We have 
only seen this from South Carolina (Dr. Ravenel), 
Var. ANGUSTIFOLIUM. Culms tall and erect, 2 to 3 feet high, branching; leaves 
longer and narrower than the type, 3 or 4 inches long, 3 to 4 lines wide, rather rigid; 
sheaths sparsely pubescent; panicle long-exserted, 3 to 4 inches long.—South Caro- 
lina-(Dr. Ravenel), Illinois (Dr. Schenck) and Fortress Monroe, Va. (Dr. Vasey). 
Var. LIEBERGIL (P. Liebergit Scribn.) Culms tall and erect, unbranched, 2 feet 
high; leaves lanceolate, distant, 3 to 4 inches long, 6 to 9 lines wide, scabrous or 
papillose, hairy, about 1ll-nerved; sheath shorter than the internodes; panicle 
about 3 inches long, 1 inch wide, the fewish branches erect-spreading and few-flow- 
ered.—Plymouth County, Iowa (John Liebergq). 
40. P. Wilcoxianum. Culms about 6 inches high, entire or sparingly branched 
and with the leaves more or less white-hairy; leaves linear-lanceolate, erect, acu- 
minate, 2 to 3 inches long, hairy both sides, rather rigid, sheaths striate, hairy, 
