ORDER CXLI. CYl'KKACK^. 5G9 



pedunculate, with ferruginous, ovate glumes; fertile spikes 3 — 1, cylin- 

 drical, on short peduncles, becoming pendulous; scales ovule, euuirtji 

 nate, mucroiiate. Pa/^oj ovate, glaucous. iv«i7 G-angled. — 2^. April 

 — May. Atound ponds. 1 — 2 feet. 



41. C. bulla'ta, (Schk.) Stem slender, acutely 3-anglod. Leavet 

 narrow, with scabrous margins. Sterile spikes 3, slender; fertile spikes 

 2, erect, on short peduncles. Glmrieti lanceolate, acute. Faleoi ovate, 

 with pubescent nerves. Fruit ovate, beaked, 3-angled. — 1^. April. 

 In ditches. 2 feet. 



42. C. eostra'ta, (Mueh.) (C. tentaculata, Ell.) Stem 3-angled. 

 Leaves long, linear-lanceolate, nerved. Steiile spike solitary, cyluidri- 

 cal ; fertile spikes 3, sessile, horizontal, witli long bracts. Glumes nui- 

 cronate. Falece ovate, beaked. Frnit ovate, nerved, with a long beak. 

 — U. Ma}' — June. Wet places. 12 — 18 inches. 



43. C. iiYSTERici'xA, (Much.) S(c7n o-angled, with the angles scabrous. 

 Leaves narrow, long, scabrous. Sterile spikes cylindrical, with ovate- 

 lanceolate glumes; fertile spikes 3 — 4, thick, the lower ones on exsert- 

 ed peduncles. Falece ovate, with a long 2-cleft beak. O'lume ovate, 

 terminated by a hispid setaceous bristle. Bracts long. Fruit ovate, 

 nerved, beaked. — If. April — May. Wet soil<. 1 — 2 feet. 



44. C. lupuli'na, (Mueh.) >S/<???i erect, glabrous, le«fy, thick, 3angled. 

 Leaves linear-lanceolate, with scabrous margins. Sterile spike on a .>-hort 

 peduncle; fertile ones 3, trect, with long, leafy bracts. O'lume with a 

 hispid point. Falca; 2-beaked, longer than the glume. Fruit ovate, 

 nerved, with 2 long beaks. — If. April — May. Swamps. 2 — 3 feet. 



45. C. follicula'ta, (L.) Stnn erect, 3-angled. Leaves ligulate, sca- 

 brous. Sterile spike solitary, terminal, with acute, lanceolate glutnea, 

 fertde spikes usually 4, erect, on i^hort peduncles. Falece ovale, beak 

 ed, inflated, i^n/z7" ovate, beaked, — 2f. June. Swamps. 12 — 18 iti. 



46 C. Elliott'ii, (Torrey.) {C. castanea, Ell.) Stetn 3-angled, slen- 

 der, purple at the base. Leaves linear, shorter than the stem. Sterile 

 spikes shorter than the bract. Glumes brown, with white margins. 

 Fertile spikes 3, nearly round, the lowest one on a long peduncle. 

 Falece inflated, with a long beak, shining. Fruit o-angled. — If. April 

 Wet pine-barrens. 1 — 2 feet. 



47. C. gigan'tea, (Rudgr.) /8'<<'//i erect, 3-anglcd, glabrous. Ztfoir* ligu- 

 late, slightly channeled. Sterile sjiike terminal, will) acute, ovate glumes ; 

 fertile spikes 3. Falece ovate, nerved. Fruit 3-angled. — If. April — 

 May. In bogs. Common. 1 — 2 feet. 



§ 6. Staminate .tpikes solitanj ; pistillate 2 — 3 — .'). 



48. C, vesti'ta, (Schk.) Stem acut«-ly 3 angled. Leaves narrow, lig- 

 ulate. Sterile spike mostly solitary, terminal; fertile spikes generally 



2, sessile, sometimes sterile at the summit. Glumes brown, wilh white 

 margins. Falece pubescent. Fruit ovale, nerved, pubescent, wilh a 

 short beak. — 2f. May — June. Wet sells. 1 — 2 feet. 



49. C. PsEUDO Cvi'e'uus, (E.) Stem erect, acutely 3-angled, scabrous 

 along the angles, stout. Leaves channeled, with .'^cabrous niargin-, 

 Sterde spike long, slender, with linear-lanceolate glumes; fertile spikea 



3, pendulous. Brads long, scabrous, nerved. Falect ovate, beaked, 2- 

 cleft at the summit. Glume .-mall, with a subulate point. Fruit ob- 

 long-lanceolate, beaked, many-nervod, with the apex bitid.— 2f. Juno, 

 In swamps. 2 fe<jt. 



