ORDER 154 CYPERACE^E. 373 



43 C. itrida Schw. and Torr. Spkl. oblong-oval, large, close and dense, dry arid 

 chaff-like in aspect; perig. lance-linear, 4", clearly bidentate, gl. i as long. W. com. 



44 C. scoparia Schk. Spkl. 58, ovate, approximate, or often crowded in a head; 

 perig. 3", lanceolate, longer than the lanceolate glnme ; calm 18 24' high, leafy be- 

 low. A very common sedge, in meadows everywhere. 



45 C. lagopodioides Schk. Spkl. 820, ovoid-clavate or globnlar with a club- 

 shaped base, approximate or crowded ; perig. lanceolate, nearly twice as long as the 

 ovate-lanceolate glume. Plant 2f, light green. Common. 



46 C. cristata Schw. Spkl. 612, ovoid-globular, crowded into an oblong head ; 

 perig. spreading, lance-ovate, pointed both ways, twice longer than the small lanceo- 

 late glume. Culm 2 3f, stout. Fields and meadows : common. 



47 C. mi ra bills Dew. Spkl. as in C. cristata; perig. broadly ovate, rounded at base, 

 acuminate at top, a little longer and broader than the gl. Rigid, 2f. Borders of fields. 

 (C. festucacea /3. Carey. C. straminea /3. Tckm. C. cristata Boott.) 



48 C. straminea Schk. Spkl. about 6 (3 12), ovoid to oval or clavate-ovate, re- 

 mote or contiguous ; perig. oval or round-ovate, very fiat, broadly winged, abruptly 

 beaked, equaling or exceeding the much narrower glume. Common and variable. 



a . typtca* Spkl. 3 6, roundish ; perig. spreading, brownish : gl. much smaller. 

 0. ttnera. Slender, with 36 ovate brownish remote spikes attenuate below, 

 y. aptrla. Spkl. 48, tawny, drooping; perig. long-beaked, thrice longer than gl. 

 $. festucarea, Spkl. 58, club-obovate, longer beaked, prominent, brownish. 

 s. hyalina* Spkl. about 6, large, pale ; perig. twice longer than the glume. W. 

 . moniliformis. Slender; spkl. about 4, remote, whitish, acute at both ends. E. 



49 C. sllicea Olney. Spkl. 2 10, pale or silvery-yellow, distant, ovate; perig. or- 

 bicular, broadly winged all around, short-beaked, usually longer and broader than the 

 lanceolate glume. Lvs. involute. 8 20'. Sea shore, Maine to Delaware (Cariby). 



50 C. adusta Boott. Spkl. globular with an acute base, large, silvery-green, close 

 or remote ; perig. ovate to oval, veined, narrowly winged, acuminate, equaling the 

 glume in length and breadth. N. J., Penn. and N. (C. argyrantha, more delicate.) 



51 C. fceiia Wiild. Spkl. 4 8, pale, oval-oblong, acute, approximate; perig. oval to 

 obovate, appressed, broadly-winged, short-beakod, a little longer than the ovate- 

 lanceolate glnme. Plant glaucous, 2 3f. Marshes, K. I. to Pa. 



52 C. alata Torr. Spkl. 4 8, ovate, large, close; perig. roundish or obovate, close, 

 abruptly short-beaked, 3-veined on the back, broad -winged, some longer than the 

 lanceolate white glume. Pale green, 3 4f. N. Y. toFla. 



53 C. Washingtonia Dew. Culm 6 18'; Ive. flat; $ spk. 1 4, oblong-cylindric, 

 6" 1', the lowest stalked ; gls. black, oval, covering the oval apiculate nerved perig.; 

 lwer bract often elongated. White Mts., and N. (C. rigida /3. ? Bigelovii Gr.) 



54 C. rotuudata Wahl. Culm If, slender; Ivs. channeled; 9 spk. 12, oval or 

 roundish ; perig. ovate, acuminate, equaling the lanceolate brownish gl.; bracts sur- 

 passing the culm ; $ spk. very slender, V. Moosehead L., Me. (Smith). 



55 C. Floridana Schw. Culms 2 10', slender, Ive. often longer; $ spk. short, 

 sessile, 9 spk. ovoid, 1 3. crowded ; glumes oval, acute, edged with brown^ covering 

 the obovate, short-beaked perig. Often with solitary 9 spikes on radical ped. S. 



56 C. Icnticnlarls MX. Culm 8 18'; Ivs. flat; S spk. 1', ? spk. 2 5, t 1', with 

 long bracts ; perig. ovate-oval, yellowish, nerved, longer than the obtuse glume. 

 Spikes cylindric. Gravelly shores, Me., N. H., N. Y., and northward. 



67 C. a urea Nutt. <j Spk. short (6"), 9 spk. 3 or 4, J 1', loose-flowered, spreading; 

 perig. oval, obtuse, yellow-brown, separate, exceeding the hyaline gl. Culm slender, 

 816' ; leaves flat, bracts exserted, leafy. Wet. N. Bug., and W. 



58 C. Mitchel liana Curtis. $ Spk. often 9 in the middle ; 9 spk. 23, cylindric, 

 slender, loose; perig. ovate, acute, short-beaked, eq. the gl. 1520'. Wet. N. Car. 



59 C. tor t;i Boott. Spikes cylindric, slender, 2 5': spikelets? 2 or 3, loose below, re- 

 curved; perig. lanceolate, the beak recurved or contorted, equaling the black- b*ndcd 

 obtuse lanceolate glume. Very smooth, 2 3f. Wet places. 



