28 
R. cymosa. Nutt. Gen. v. l. p. 
Ram. et Schult. Mant. v. IT. p. 47. Tor- 
rey, Fl. v. 1. p. 56. (ezcl. syn. Ell. et 
Pursh.).—Schenus cymosus, Willd. Sp. 
PI. v. 1. p. 265. Muhi. Gram. p. 9. 
Culm one to two feet high, smooth, 
acutely triangular. Leaves two to three 
lines wide, glabrous; the radical ones 
somewhat crowded, the upper cauZine ones 
often overtopping the culm. Sheaths stri- 
ate. Corymbs three to four, somewhat 
densely flowered ; the terminal ones largest, 
the lateral ones on short, exserted pedun- 
cles. Spikelets aggregated in fives (three, 
Willd.) on the ultimate divisions of the 
corymbs. Glumes fuscous; the inferior 
ones suborbicular, emarginate, mucronate ; 
the interior ones ovate. Bristles six, a 
little more than one half the length of the 
nut, slightly hispid upward. Stamens 
three. Style bifid. Nut a line long, 
compressed or somewhat tumid. Tubercle 
(the persistent base of the style) depress- 
ed-conic, about one quarter the length of 
the nut. 
Has. New Jersey to Louisiana. Ma- 
ryland, Charleston, Georgia, and New Or- 
leans. . July to August. 
Oss. The R. cymosa of Eliott is de- 
scribed as having a terete culm, and a 
smooth nut. His plant is most probably 
Schenus fascicularis. Mx. 
orreyana ; culmo gracili sub- 
tereti, foliis setaceis, paniculis corymbosis 
su ifloris, spiculis ovatis plerumque 
dicellatis, nuce elliptico-obovata com- 
pressa transversim setis sursum 
hispidulis lengist, tuberculo compresso- 
conico basi latitudine nucis. 
R. micrantha, Gray, Gram. et Cyp. I. 
no. 96. (excl. syn. 
ulms cæspitose, one to three feet high, 
striate, subterete,” and, with the leaves, 
brous. Radical leaves six to eight 
inches long, narrow and rigid ; cauline ones 
much shorter, setaceous. Panicles one to 
three, corymbose, somewhat loosely flow- 
ered, on short peduncles. Spikelets ovate, 
“mostly pedicellate. Glumes fuscous, ovate, 
mucronate. ristles six, hispid upwards, 
one-half to two-thirds the length of the 
LS 
A MONOGRAPH OF THE 
39. nut. 
a 
Stamens three. Nut exceeding 4 
line in length, oblong-obovate, very evenly — 
transversely rugose, with minute longitu- 
dinal strie. Tubercle compressed-conic, 
very broad at the base, scarcely m 
as long as the nut. 
Has. New Jersey. July to Augusti a 
Oss. In its nut and bristles this species - 
approaches R. rariflora, but is widely am 
ferent in habit. | 
3. R.rariflora (EIL); culmis Ww 
sis foliisque setaceis, paniculis simplicibus | 
paucifloris, spiculis ovatis, nuce obovata 
compressa transversim rugosa setis sursum - 
hispidulis longiori, tuberculo tompa 
conico. | 
R. rariflora, EU. Bot. S. Con et Geom 
v. 1. p. 58. (ezcl. syn.) . 
Schenus rariflorus, Mz. FT. v. 1. p. 36. 
et Herb.! Pers. Syn. v. 1. p. 60. Muhl. — 
Gram. p. 10. l 
Culms capillary, six to twelve inches 
high. Leaves setaceous, shorter than the 
culm. Panicles subcorymbose, nearly 
simple, very loosely and few- (three to 
eight) flowered. Spikelets ovate, all pedi- 
celled. Glumes ovate, mucronate, fuscous. 
Bristles six, very fragile, so that the whole 
number is seldom seen when the fruit is 
mature; minutely hispid upward, variable - 
in length, but always shorter than the nut. — 
Stamens three. Style bifid. Nut obovate, — 
deeply rugose, crowned with a compressed | 
conic tubercle, scarcely half so long as the ~ 
nut. | 
Has. S. Carolina and Georgia, oni | 
siana. 
Oss. This plant was erroneously re- 
ferred by Vahl (Enum. II. p. 231.), to his 
R. micrantha, from the West Indies, @ 
species nearly allied to ours, but which 
differs in the length of its bristles and tu- 
bercle. There is no specimen of Schenus 
rariflorus in Muhlenberg's Herbarium. 
4. R.miliacea ; culmo triquetro folio- 
so, paniculis axillaribus terminalibusque; 
ramis divergentibus laxe multifloris, spicu- 
lis turgido-ovatis omnibus  pedicellatis, 
nuce globuloso-obovata transversim rugu- 
losa setis sursum hispidulis 4 breviore, me 
brevissimo depresso-conico. — 
