766 Oedee 155.— CTPEEACESl.'. 



the orifice, alout equal to the oblong and obtuse, or ovate, cuspidate, rust-colored gt. ; 

 culm 8 — 16', ascending, obtusely triq., with subradieal flat and narrow Its. — 

 Glaucous green. Marshes, common. 



153 C. irrigua Smith. 9 Spikes 2 — 3, ovate-oblong, thiokish, nodding ; perig. 

 roundish-ovate, short-rostrate, subcompressed, shorter than the ovate-lamceolate, 

 chestnut-brown gl. ; st. near a foot high, longer than the flat, subeurved Ivs. ; 

 glaucous. — ,5 Spike rarely S at the summit, or ¥ spikes with stamens at the 

 base. Marsh. Bridgewater, N. T. (Gray) also in marshes in Mass. and Mich. 

 (Cooley), rare. (0. Mmosa, /? irrigua "Wahl.) 



154 C. rariflora Smith. 5 Spikes aiout 2 linear, quite loose-Jtowered, kmg-ped., 

 nodding ; perig. ovate, oblong, f riqu., depressed, equaling the ovate, subcircinate, 

 brown gl. ; culm 10'. — Glaucous. White Mountains, N. H. (Barratt). (C. limosa 

 (3. rariflora Wahl.) 



155 C. Barrattii Torr. (B. t. 176.) i Spike 1, erect, cyl., long (rarely 2), with 

 ovate, obtuse, dark gls. ; S spikes 2 to 6, often long-cyZ., staminaie at apex, the 

 lower on slender, recurred pedicels, upper erect, commonly single, sometimes 2 or 

 4 from the same bract, purple or dark ; perig. ovate or lance-ovate, often with a 

 very short beak, obtuse, slightly diverging, roughish, longer than the ovate dark 

 gl. ; culm 1 to 2f, longer than the long, rough leaves ; glaucous green. — N. J. to 

 N". Car. (Curtis). (C. flacca Carey. C. recurva Huds.) 



156 C. milliacea Muhl. i Spike erect, slender; ? spikes 2 — 3, long-oyl., slen- 

 der, loose-flowered below, nodding ; perig>-Ovate, triq., glabrous, subrostrate, en- 

 tire at the orifloo, longer than the oblong, emarginate or obcordate, awned gl. ; 

 Sit. 12 — 24', slender, scabrous; Iva linear-lane. — Yellowish green. Wet meadows, 

 common. 



157 C. hystricina Willd. (B. t. 152.) i Spike rarely pistillate at the sum- 

 mit ; $ spikes 2 — i, oblong, cyl., attenuate, subdistant, long-bracteato, nodding, 

 rarely sheathed ; perig. ovale, diverging, inflated, subtriq., nerved, bitid, glabrous, 

 twice longer than the oblong, emarginate, submucronato gl. ; culm 12 — 24', scab- 

 rous above, with long, linear-lance. Ivs. — Yellowish green. Wet places, very 

 common. (See Sill. Journ., 1848, C. Georgians.) 



f}. cooLEYl. i Spikes short small, ? spikes often short- ovate, the lowest on a 

 very long (5 to 8'), recurved, filiform peduncle; cuhn very slender, prostrate, 

 shorter than the long, narrow Ivs. — Mich. (Cooley). (C. Cooleyi, Ed. 1.) 



158 C. Pseudo-cyperus L. (Schk. fig. 102.) S Spike cyl. and elongated ; ? 

 spikes 3 — 4, cyl., long-ped., rather remote recurved-pendulous, with long and leafy 

 bracts ; perig. ovate, lane, bidendate, reflexed, and a little shorter than the ovate- 

 lane, or setaceous gl.. — Common about ponds and ditches. It is smaller in all its 

 parts than C. comosa (Boott), the fruit of the latter is deeply and widely bifurcate, 

 and its glume is hispid or ciliate. The two have been confounded in our country, 

 though long known. 



159 C. comosa L. (B. t. 36.) ,5 Spike long and slender, rarely pistillate above ; 

 5 spikes 2 — 5, long-cyl., pendulous, thick, dense-flowered, with very long and 



leafy bracts ; perig. ovate-lano., acuminate, rostrate, deeply 'i-forked, reflexed, triq,, 

 glabrous, generally longer than the lane., mucronate, setaceous gl. ; culm 18 — 30', 

 large, rough, with long and wide, rough leaves and bracts. Plant very glabrous 

 and yellowish-green. Wet places about ponds and ditches, common. (C. fiir- 

 cata Ell.) 



160 triohoodrpa Muhl. ? Spikes about 3, erect, rarely 1, or 9 above, cyl., 

 lower shorter ; 9 spikes 2 — 4, erect, long-cyL, smoothish, rather loose-flowered ; 

 perig. ovate, conic, inflated, nerved, rostrate, bifurcate, densely pubescent, about 

 twice longer than the ovate-lane. gl. ; culm 15 — 30', scabrous above, and with 

 pubescent leaves and sheaths. — Light green. In wet and marshy places, com- 

 mon. 



/3. TUEBINATA Dew. 9 spikes ovate or short oblong, thick, remote, dense- 

 flowered ; perig. subdiverging, ovate and conic, rostrate, longer than the 

 ovate-oblong, mucronate gl ; st. 2 — 3£ — Glaucous green. In a pond in 

 Beckman, N. Y., thero abundant 



161 C. verrucosa Muhl. J Spike (rarely 2) cyl., large, obtuse, stalked, with 



