CYPERACEAE . 2385 
sessile or short-peduncled: perigynium spreading or upper ones erect, 
mm. long, 3.5-8 mm. thick, many-nerved, contracted into the subulate bidentate 
ms the teeth nearly erect. "er "Woods in acid soils, various provinces, 
o Tex., Man., and Newf.—Spr.—fall. 
127. C. Asa-Grayi Bailey. oe the culm 3-10 dm. tall, are ens 
strongly reddish-purple at base: f-blades elongate, light-green: staminate 
spike usually long-peduncled: pista spikes 1—2, sessile or noe -peduneled 
perigynium spreading, 12-18 mm. long, 6-7 mm. thick, glabrous or his spidulous, 
many-nerved, contracted into fis subulate bidentate beak, the teeth oe 
spreading or erect.—Rich alluvial ion in ealeareous distriets, various pro 
inces, Ga. to Mo., Mich., and Que 
128. C. louisianica Bailey. Culm 2-6 dm. tall, slender, smooth or nearly so: 
dpi pins solitary, long-peduneled: pistillate spikes 1-4, about 2-3. 5 em. 
long, 1.5-2.5 em. thick, the lower slender-peduneled: scales ovate - uo ne 
half length of. perigynia, sharp-pointed: perigynium ovoid, mm. 
4—6 mm. thick, smooth, strongly-nerved, contracted into the oe ae e 
the teeth mostly s slightly spre ading.—Swampy woods, in acid soils, Coastal 
Plain and rarely adj. provinces, Fla. to Tex., W Mo., Ind. and N. J—Sm m. 
129. C. lupulina Muhl. Culm 3-12 dm. tall, stout, smooth: _Staminate spike 
shorter ae perigynia; Pn nium laneeolate-ovoid, 10-20 mm. long, 4— 
thiek, ma erved, contracted into the subulate bidentate beak, the teeth 
more or ie spreadin oe OP-SEDGE.)—Swamps, various provinces, Fla. to 
Tex., Ia., Minn., Que., and N. B.—Sum. 
. gigantea Rudge. Culm 4-10 dm e NEC _leaf- blades 7-16 mm. 
—5, ped- 
uneled or the upper sessile, 2-8 em. long, 2.5-3 em. een ensely many-flow- 
red: scales lanceolate, pun "e length of rn acuminate or awned: 
perigynium lanceolate, much swollen at base, 12-18 mm. long, 4-6 mm. 
thick, many-nerved, d into the very long subulate beak, the teeth 
(e r less spreading.— Open swamps in a on Coastal Plain and 
adj. provinces, Fla. to Tex., Mo., Ky., and Del.— 
The nin species included in Fl. SE. U. S. have been omitted be- 
cause no evidence has been found that they occur within our area: dr 
ed Muhl., C. hystricina Muhl., C. vestita Willd., **C. filiformis L’ 
(C. lasiocarpa Ehrh.), C. hirta L., C. gracillima Schw. 6. "n d 
C. Sartwellu Dewey, C. interior Baile ey, C. hormath odes Fernald (C. tenera 
authors); and the following AM been omitted o found only in territory 
covered by above mentioned Flora, but not by this: Carex planostachys Kunz ze, 
C. filifolia Nutt., **C. gravida “Bailey,” C. Brittoniana Bailey, C. hyalina 
Boott, C. Bicknelli Britton. 
22. CYMOPHYLLUS Mackenzie. Perennial Da with short rootstocks 
and culms flattened in drying. Culms with four to six overlapping striate 
bla o sheaths and after flowering N one large blade-bearing leaf 
without sheath, ligule, or midrib, and with undulate margins appearing 
minutely serrulate. Spike one, SU NE androgynous, the flowers monoecious, 
