CYPERACEAE 185 
ends, diit wrinkled and cancellate, the tubercle low-conic, with a eol- 
lar-like base.—Low pinelands and ponds, Coastal Plain, Fla. to La., S Mo. 
and Ga. 
47. R. saxicola Small. Stem 2-3 dm. tall, somewhat 3- ipud leaf- age 1- 
.0 mm. ether ymb es 
1.5 mm. lon ransv the tu 
berele depressed-conic or disk-like, a sixth or an eighth the length of the 
aehene.—Boggy slopes, Stone Mountain and Little Stone Mountain on the 
Piedmont of Ga. 
48. R. punctata Ell. Stem 3-7 dm. tall, slender, 3-angled: leaf-blades 2-5.5 
mm. wide, flat or nearly so: spikelets borne, rather few together, in few irregu- 
lar eorymb-like or cluster-like cymes, ovo oid, 3—4.5 mm. long: scales md 
2—4 mm. long, light chestnut-colored: periant cud deis ia than the achen 
wobei ovoid, 2-3 mm. long, prominently transversely wrinkled, the benle 
ER A often deltoid, much shorter than the achene Pinelands. Coastal 
Plain, Ga. and S. C. 
49. R. microcarpa Baldw. Stem up to l m. tall, cd terete: leaf-blades 
channeled, 1.5-4 mm. wide: spikelets Bod usu ally m any together, in 2-3, 
often Er rip ee -like cymes, ovoid, 2-3 long: scales 
mueronulate, 1.5-2.5 long, very broad, dark-brown: perianth- -bristles 
about as long as the achene or slightly lo onger achene broadly obovoid uc 
obo es obovoid, about 1 mm. long, strongly transversely w wrinkled, 
tuberele depresse ed, Vim sh, mueh shorter than the achene.—Low dm 
l pinelands, and ponds, Coastal Plain and adj. provinces, Fla. to Tex. and 
N -(W.I - 
50. R. decurrens Chapm. Stem 0.5-1.2 m. tall, nearly terete: leaf-blades lax, 
2—4 mm. n. wide, flat: Elise Donc in 4-7 la ax, spreading or drooping, corymb- 
ee id, 2-2.5 mm. long: scales mucronulate, 1.5-2.5 mm. long, brown: 
porianth- “bristles about as long as Es aehene or longer: achene narrowly 
oid neate-obovoid, about mm. long, E a wrinkled, the 
faba Nes ped acute, somewhat codes on the achene-sides.—Swa amps 
and muddy Fla. 
R. schoenoides A ur tton. Stem up to 1.2 m. tall, 3-angled: leaf- 
blades mostly 2-3 , flat or slightly involute: spikelets ROME many 
EE in i- 5 lax often. somewhat nodding, bag ond -like cymes, ovoid, 2.5-3 
lon cales mucro onulate, stly 2-3 mm. lon ne yon brown: dE 
bristles, unequal, as ie as the ade Or trum achene oval or e n 
fully 1 mm. long, strongly transversely wrinkled, one ced at the bas 
tubercle depressed, pius: shorter than th hene.—Wet grounds and RR 
oastal Plain and occasionally adj. provinces, Fla. to La. and N. C. 
in R. patula A. Gray. Stem sng Maur 0.7-1.2 m. tall: leaf-blades 2—6 
wide or more: spikelets borne i or more dae da ie hand like cymes, 
aa 3-3.5 mm. long: scales rebat pe own, ong: perianth- 
bristles i E as the pid or seabed achene ‘bro sadly: pt void, orbicular- 
obovoid, . long or more, transversely wrinkled, the tubercle low-conic 
or depre d —Svamps iu] low pinelands, Coastal Plain and adj. provinees, 
Fla. to Miss. and N. C. 
nid R. caduca Ell Stem 0.9-1.5 m. en sharply 3- ee leaf- pede 4—10 
. wide: spikelets borne very wo e together uh regular corymb-like 
cymes, ovoid, sometimes narrowly so . lon tw cales muero Bus. te, 2-3.5 
m. long, dark-brown: perianth- istis | pie than the achene: achene broadly 
obovoid or orbieular-obovoid, about 1.5 mm. long, finely "Peck. wrinkle d, 
