ORDER 154. CYPERACEJ5. 873 



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

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



44 C. scoparia Schk. Spkl. 5 8, ovate, approximate, or often crowded in a head 

 perig. 3", lanceolate, longer than the lanceolate glume; culm 1824' high, leafy be 

 low. A very common sedge, in meadows everywhere. 



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

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

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



4(> 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. mlrabllls Dew. Spkl. as hi 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 0. Carey. C. straminea /3. Tmckm. 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. 



". ti/plcn. Spkl. 36, roundish ; perig. spreading, brownish : gl. much smallei 

 /3. itiifi-fi. Slender, with 36 ovate brownish remote spikes attenuate beiow. 

 y. afitria, Spkl. 4 8, tawny, drooping; perig. long-beaked, thrice longer than gl. 

 S. f'mtiK-firra, Spkl. 5 8. club-obovate, longer beaked, prominent, brownish. 

 . /ir/n/i n. Spkl. about 6, large, pale ; perig. twice longer than the glume. W. 

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



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

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

 lanceolate glume. Lvs. involute. 820'. Sea shore, Maine to Delaware (Canby). 



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

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

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



51 C. I ten a Willd. Spkl. 4 8, pale, oval-oblong, acute, approximate; perig. oval to 

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

 lanceolate glume. Plant glaucous, 2 3f. Marshes. li. 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. Wasliingtonla Dew. Culm 6 18'; Ivs. flat: s spk. 14, oblong-cylindric, 

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

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



64 C. rotundata Wahl. Culm If, slender; Ivs. channeled; 9 spk. 12, oval or 

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

 passing the culm ; t spk. very slender, 1'. Moosehead L., Me. (Smith). 



55 C. Florldana Sch\v. Culms 2 tO', slender, Ivs. often longer; t spk. short, 

 sessile, 9 spk. ovoid, 13. crowded; glumes oval, acute, edged with drown, covering 

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



66 C. lentlciilarls MX. Culm 8 18'; Ivs. flat; S spk. 1', 9 spk. 2 5, J 1', witii 

 Icng bracts; perig. ovate-oval, yellowish, nerved, longer than the obtuse gliuiii- 

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



57 C. a u re a Nutt. ,5 Spk. short (6"), 9 spk. 3 or 4, J 1'. loose-flowered, spread'i 

 perig. oval, obtuse, yellow-brown, separate, exceeding the hyaline gl. Culm slci.i.ei 

 816'; leaves flat, bracts exserted, leafy. Wot. N. Eng., and \V. 



58 C. Mitcliel liana Curtis, t Spk. often 9 in the middle ; 9 spk. 2 3, cylind.-ie, 

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



59 C. torta Boott. Spikes eylindric, slender, 25'; spikelets 2 or 3, loose below, r 

 curved ; perig. lanceolate, the beak recurved or contorted, equaling the black 'landed 

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



