540 CYPKRACKiF.. (sedge FAMILY.) 



Var. angUStifolia, Boott Sterile spike long-peduncled ; fertile spikes 

 mostly 3, linoiir, fcw-tiowcivd, very ninote, the lowest at the base of the culm; 

 perigynia 4-8, lanceolate-oblong, 3-angled, alternate and 2-ranked, pointless 

 and entire at the apex, longer than^hc ovate rough-awned scale. — Dry open 

 woods, Florida. — Culms filiform, 8' -12' high. Leaves and bracts linear. 

 Lowest sheaths dark-brown. 



43. C. granularis, Muhl. Sterile spike short, sessile ; fertile spikes 3-4, 

 linear-cylindrical, densely many-flowered, yellowish, the upper one nearly sessile, 

 the lowest distant and long-pcduncled ; perygynia small, globose-ovate, con- 

 tracted into a minute mostly recurved entire or emarginatc point, longer than 

 the ovate obtuse or barely pointed scale. — Meadows and banks of streams, 

 Florida, and northward. — Culms 6' -12' high. Leaves and bracts broadly 

 linear, 3-nerved. 



44. C. COnoidea, Schk. Sterile spike long-peduncled ; fertile spikes 2-3, 

 oblong or cylindrical, densely many-flowered, remote ; perigynia small, oblong- 

 ovoid, obtuse, striate with impres.sed nerves, smooth and shining, equalling or 

 the lower shorter than the ovate pointed or short-awned scale. — Mountains of 

 North Carolina, and northward. — Culms 6'- 12' high. Leaves and bracts lin- 

 ear. Spikes j' - I' long, the lowest long-pedunclcd. 



45. C. tetaniea, Schk Sterile spike short-peduncled ; fertile spikes 1 -3, 

 linear-cylindrical, remote, loosely flowered ; perigynia obovate, narrowed at the 

 base, contracted into a short bent point, longer than the ovate acute or short- 

 a^vned scale. — Mountains of North Carolina, and northward. — Culms 1° high. 

 Leaves and bracts narrowly linear. 



t t Periqynia smooth [except No. 51), 3-an(]Ied, with a recurved or spreading point : 



lowest peduncles elongated and often recurved. 



Bracts leafy : scales white. 



46. C. laxiflora, Lam. Sterile spike pedunclcd, exceeding the bracts; 

 fertile spikes 2-3, remote, linear, loosely 8- 12-flowercd ; perigynia oblong- 

 obovatc, tapering into a smooth spreading entire beak, longer than tiic oblong 

 mucronate scale. (C. anccps, 1V//W. C. jdantaginca, /•"//. C. igtiota, />w.) — 

 Plant more or less glaucous. Culm 10'- lij' high, usually coniprcsscd-3-angled 

 above. Leaves linear or lanceolate, tender. Sheaths smooth. 



Var. striatula. Culms, leaves, and especially the sheaths, rough ; sterile 

 spike sessile or nearly so, shorter than the bracts ; fertile spikes 3 - .5, rather 

 closely 12-20-flowcrcd, the 2-3 upper ones commonly approximate; perigynia 

 obovate, abruptly short and bent-pointed. (C striatula, Micli.r. C. blanda. 

 Dew. C. conoidea and C. tetaniea. Ell.) — Dry open woods and margins of 

 fields, Florida, and northward ; common, and varying greatly in the form of the 

 perigynia and width of the leaves. 



47. C. Styloflexa, ruu-klcy. Sterile spike short-pediinclcd ; f'rtile spikes 

 3, oblong, few-flowcrcd, very remote, the lowest on a long and mostly nodding 

 peduncle ; perigynia lanceolate or oblong, narrowed at the base, tapering into a 

 dpreading rough-anglod mostly emarginatc beak, longer tbnn the oli'oiig mucro- 

 nate scale. — Shady swanip.s, Middle Florida, to the mountains of North Caro- 



