184 CYPERACEAE 
R. Torreyana A. Gray. Stem 3-9 dm. tall, terete or obseurely 3- -angled: 
eat blades oe those of the upper leaves setaceous: spikelets Pica in 
filiform-stalked, corymbose, rather eae cymes, ovoid, abou 
pum scales ER UT mostly 2.5—4 m m. long: pun bies shorter 
than the achene: achene e ellipsoid- obovoid, about 1.5 long, transversely 
wrinkled, the tubercle broadly conic or depressed, much oes than the iid 
ur pinelands and acid swamps, Coastal Plain and New England Coast, Ga. 
o N. H. 
= Es dracon Britton. Stem 3-8 dm. tall, 3-angled: prea ts flat or nearly 
wide: spikelets borne in 1 or few open corymb-like cymes, ovoid, 
Se ed [p seales aristulate-mue Mond or cone p^r them acute, 2.5—3.5 
mm. long, red: perianth-bristles shorter than the achene: achene rne 
vagin or lpia , about 2 mm. long, transversely wrinkled, reddish- 
brown, 8 hat constricted at the apex, the tubercle much depressed or Pu 
flat. Baa Coastal Plain, S Ga. and Ala. 
42. 
blades oe. flat e nearly so, 4 mm. wide or ‘less: spikele le ts borne in a 
pea ^ : 
Ld. . long: sea . lon 
rown: perianth-bristles shorter than the achene: achene ellipsoid, fuly 1m 
long, cancellate and transversely wrinkled, the tubercle depressed, low- eem 
or somewhat iud —Swamps and ponds, pen. Fla 
. R. perplexa iun Stem slender, up to 1.2 m. tall: d deep- 
green, flat, 1—2.5 wide: r ikelets borne in a terminal, and also s rs 
lor few Pals con mpoun und corymb-like m ovoid or orbicular-ovoi id, abou 
2 mm. long: s He mueronulate, brown, 1.5-2.5 mm. a a anth- bristles 
ee than Bis achene: achene orbicular-obovoid, about 1 1o ong, trans- 
sely wrinkled, brown, not constricted at the apex, the nerale much de- 
o — Swamps, hammocks, and low pinelands, Coastal Plain, Fla. to La. 
and N. C.—(W. I.) 
44. R. globularis (Chapm.) Small. pen: very slender, 0.1—1.5 m. tall, bright- 
greon: leaf-blades 1-2 mm. wide, but usually strongly involute: spike elts borne 
in 1 
or few small few-flowered close dude ubglobose or oval-globose, 1.5—2 
mm. long, the ee e capillary tipped ign p or obscurely 
tipped, dark-brown: h-bristles less tha ong the achen 
achene iu DON pu ut 1 mm. long or slightly ieee very turgi 
id, 
transversely wrinkled, brown, the fibers depressed-conic.—Pinel lands, Coastal 
Plain, Fla. to Tex. and Va. 
45. R. cymosa Ell. Stem slender, 0.5-1 m. tall, light m leaf-blades 2-5 
n few 
mm. wide, flat or somewhat i nvolute: spikelets’ borne veral—many- 
were rymb-like cymes, ovoid or ellipsoid-ovoid, 5- o mm. long, the 
subtending bractlets with long capillary tips: scales slender-mucronate to 
aristate, reddish-b -bro p nth-bristles over 1 as 
hene obovoid or ellipsoid-obovoid, ab mm. long, strongly 
transversely wrinkled, the ele low-eonie.—Swamps, meadows ds e 
tuber m 
nd woods, various provinces, Fla. to Tex., Kans., Ind. and N. J 
46. R. compressa Carey. Stem rather d up to 1.2 m. tall: leaf-blades 3-5 
mm. wide: spikelets borne in hn 5 cluster-like or ee -like cymes, with pro 
iae braets and braetlets, ovoid gend . long: seales lod 1.5-2.5 
. long, brown: perianth- Desin low than "s ane achene rhombic- 
obovoid or orbieular-obovoid, about 2 mm. long, somewhat Conn d at both 
