CYPKRACE^:. 420 



56. C. HiKsuTA. Willd. 



Spikes 3, short-oblonj;, thick, alternate, erect, the loicer subsessile and long 

 bracleate, all approximate and densely flowered ; pcrig. ovate, triquetrous, 

 nerved, obtuse, entire at the orifice, glabrous in maturity, about equal to the 

 ovate, acuminate, glabrous glume; stein 12 — 20 inches high; leaves and 

 sheaUis retrorsely pubescent; vjipcr spike very rarely all staminate. Moist 

 upland meadows. Common. 



fi. pedunculala. Torr. ; 5;>:/.t5 oblong-c)'lindric, pedunculate ; Zeaees slightly 

 pubescent. Common. C triceps (Alz) much resembles this, — is not pub- 

 escent but glabrous. 



57. Buxbaum'ii. JVa/tl. 



Spikes about 4, cylindric, thick, upper one sometimes wholly staminate and 

 sometimes staminate above and below ; pit-ti'liferuus oblong, subremote, 

 subsessile, bracteate ; pcrig. ovate-oblong, acutish, or obovate, obtuse, subtri- 

 quetrous, entire at the orifice, nerved and glabrous, scarcely equal to the 

 oblong and mucronate glume; stem 10 — 18 inches high, leafy towards the 

 base. Common in wet grounds. It is described as sometimes having 2 

 stigmas in Europe, but placed by Schk., Walil., &c., in the division having 3. 



58. C. graci'llima. Sc/tw. 



Spikes 3 — 4, long, graceful, sub-loose-flowered, distant, long-pedicillate, 

 recurved in maturity, bracteate, tipper one rarely all staminate ; pcrig. oblong, 

 triquetrous, obtuse, oblique at the orifice, slightly 2-lobed, longer than the 

 oblong and obtuse and short-awned glume; stem ofien 2 feet hiiih, reddish 

 towards the base, leafy and subprocumbenl, pale green. Common in damp 

 meadows. 



59. C. FORMOSA. Dew. 



Spikes 3 — 4, oblong, short and thick, distant, 1-sided, on a long and slender 

 peduncle, recurved ; pc/i"'. oblong, triquetrous, subinflated, acutish at either 

 end, nearly entire or 2-lolied at the orifice, twice longer than the ovate and 

 acute glume ; stem 1 — 2 feet high, 3-sided, dark brown towards the base, 

 yellowish bright green. Common in wet meadows. 



60. C. Davi'sii. Torr. C. Torreyana. Deio. 

 Spikes 4, oblong, cylindric, subsparsely flowered, remote, pediciUate, pen- 

 dulous in maturity, pcrig. oblong-conic, subinflated, subtriquetrous, nerved, 

 acutish, short-rnstrate, 2-lobed at the orifice, glabrous towards maturity, about 

 equaling the oblong, scabrous-awned glume ; stem 1 — 2 feet high, triquetrous, 

 scabrous above, with leaves equaling it ; /euivs and 5/i<;«i/(5 pubescent, some- 

 times but very little, light green. Fust found on the alluvial meadows of the 

 Housatonic in Mass., Dewey. Sometimes nearly pubescent. 



G. Staminate Spike single. 

 ] • PiuiUate spikes short and sessile or nearly sessile. Perigynia radiating or diverging. 



61. C. vARiA. MyJt. 



Stuinituile spike erect, short or subelongated ; pistillate .<!pikes 3, ovate, sessile, 

 rather near, bracteate, few-flowered ; perig. ovate or sub-globose, subtriquet- 

 rous, acuminate-rnstrate, bifid, scabro-pubescent, about equal to the ovate, 

 acuminate glume ; stem C — 15 inches high, erect, slender, purple towards the 

 base ; pale green. Dry woods and hedges ; common. 



/3. pedi.cetldta {Dew ) has pistillate spikes ovate-oblong, short pedicillate, 

 erect, loose-flowered ; perig. more numerous. Grows in the same situations. 



62. C PENNSYi.vANicA. Liim. C. maiginata Mu.h. 

 SUiminatc spike erect, pedunculate, subtriquetrouf3, with an obtuse glume ; 



pistilliitc spikes 1 — 3, ovale, subsessile, subappioximate, fevv-flovvered ; perig. 

 ovate-globose, tomentose, short-rostrate, sliiihlly S-toothed, about equal to the 

 ovate-acnniinate, or oblong-acuminate, deep-reddish glume; stem 4 — 12 

 inches high, erect, stiff, with short leaves. Open woods and hedges — com- 



