32 
nuate at the dio; and slightly produced at 
the summit; under a lens appearing mi- 
nutely —— rugose, but to the naked 
eye nearly smoo Tubercle very short, 
depressed-conic. 
Has. Damp Savannahs, Wilmington, 
N. Carolina; Havanna, Georgia, and New 
Smyrna, Florida. 
Oss. This species, which is well de- 
scribed by the distinguished Botanist whose 
name it bears, differs widely from Schanus 
distans of Mx. It is compared by Elliott 
with his R. punctata, which indeed it 
somewhat resembles, but the two species 
cannot be confounded. The light chest- 
nut-coloured spikelets in this species are 
quite remarkable. "There is a specimen of 
this plant in Muhlenberg's Herbarium, la- 
belied Schænus fuscus, Ell., and from this 
specimen the detailed description of S. fus- 
eus, Muhl. Gram. was probably drawn up, 
as it agrees quite well with this species, 
and not at all with S. fuscus, Linn. There 
= no specimen under the name of S. dis- 
ns in Muhlenberg's Herbarium; but as he 
d whether his 8. fuscus may not be S. 
. distans, Mz., and as he probably drew his 
description from specimens, sent either by 
Elliott or Dr. Baldwin, I cannot doubt that 
the synonym is properly referred, 
** Nut not rugose. 
13. .R.corniculata ; corymbis decom- 
positis diffusis, spiculis (magnis) laxe fas- 
ciculatis, nuce obovata levi stylo persis- 
tente multo breviore setis subulatis ine- 
qualibus sursum hispidulis longiore. 
Scheenus corniculatus, Lam. Jil. Gen. v. 
I. p. 137.—S. longirostris, Mz. Fl. v. I. p. 
87. Muhl.! Gram. p. 7.—S. umbellatus, 
Walt. Fl. Car. p. 70.? 
R. laxa, Vahl, Enum. v. 1I. p. 231. 
Pursh, Fl. v. I. p. 48. Ram. et Sch. Syst. 
Veg. v. II. p. 84. Torrey! Fl. v. I. p. 57. 
Spreng. Syst. Veget. v. I. p. 196.—R. lon- 
girostris, Ell. Bot. S. Car. et Georg. v. I. 
P 
Whole plant smooth and somewhat glau- 
cous. Culm triquetrous, three to six feet 
high. Leaves a foot or more in length, a 
quarter to half an inch wide, smooth, sca- 
brous on the margin. Flowers axillary fi 
"ELS E 
V'MONOGEAPH OP TR 
14 nd : q } 
corymbs ; the terminal one largest. Spike- 
lets subulated by the persistent exserted 
styles ; when mature, nearly an inch in 
length, loosely fascicled in fours and fives 
at the extremity of the elongated, trique- . 
trous peduncles. Glumes ovate, fuscous. 
ristles for the most part six, subulate, 
minutely scabrous upward ; the three outer 
ones (one of which is frequently wanting) 
about one-fourth the length of the nut; 
one of the minor series about half, the | 
two others one-third the length of the nut, 
Stamens three. Style undivided. Nut 
smooth, obovate, compressed, crowned 
with the scabrous (upward) persistent, in- - 
durated style, ps twice and a half its 
length. 
Has. 
Delaware. — ' 4 
Oss. I have restored the specific name | 
of Lamarck on account of its priority. — 
14. R. macrostachya (Torr. Herb.); 
corymbis axillaribus simplicibus terminali- - 
bus compositis, spiculis magnis confertim | 
fasciculatis, nuce obovata levi setis sursum 
hispidulis duplo—stylo persistente subqua- — 
druplo—breviore. E 
Culm two feet high, smooth, triangular | 
Leaves glabrous, one to two feet long, and. 
two to four lines broad; the upper ones — 
scabrous on the margin. Corymbs about 
four, densely fasciculated ; the lateral ones : 
subsimple, on peduncles twice the length - 
of the sheaths; the terminal one largest, - 
compound, subsessile, leafy; the fascicles — 
sessile and pedunculate. Glumes fuscous, 
scarious, acute ; the outer ones ovate ; the | 
inner ones ovate-lanceolate. Bristles six, | 
iform, minutely hispid upward, about : 
twice as long as the nut; the exterior ones | 
somewhat shortest. Stamens three. Style 
Ohio to Louisiana, common. — 
mature, nearly four es as long as the. 
obovate, compressed nu E 
AB. Near anes Massachusetts} 
New Bedford. : 
Oss. This species, and the — 
to which it is baee Mes differ i in habit 
th port; 
