348 ENDOGENOUS PLANTS 



Obs. This is the species so remarkable, and well known, for 

 forming large dense tufts, or tussocks, in neglected swamps. 



15. C. criilita, Lam. Pistillate gpikelets about 4, cylindrical, 

 Jong, pendulous on exserted peduncles, often staminate at apex ; 

 perigynia somewhat inflated, keeled on each side, much shorter 

 than the lance-linear roughly-awned scale. 



HAIRED, OR CHAFFY CAREX. 



Culms 2 to 4 feet high, rather stout, leafy below. Leaves lance-linear, the 

 lower ones shorter than the culm, with loose, striate sheaths, the upper ones, or 

 bracts, surpassing the culm, without sheaths. Stam. spikdets mostly 2, linear, 1 to 

 2 inches long, sometimes pistillate at summit. Pistillate spikelets 2 to 3 inches 

 long, on shortish peduncles, the lower ones gradually longer. 

 Hob. Swampy margins of rivulets : frequent. Fl. May. Fr. July. 



2. Perigynia slightly inflated, nerved, scarcely beaked, smorfk. 

 t Upper pistillate spikelets subsessile; staminate one solitary and subsessite. 



16. C. granularig, Muhl, Pistillate spikelets 3 or 4, cylindri- 

 cal> densely flowered, the lowest on a long stalk, remote or low 

 down the culm; perigynia roundish-ovoid, longer than the ovate 

 acuminate scale,- the beak very short, and bent or recurved. 

 GRANULAR CAREX. 



Culms 9 to 15 inches high, slender, leafy. Leaves erect, rather glaucous, the 

 lower ones shorter than the culm, the upper ones, or bracts, surpassing the culm ; 

 sheaths membranaceous and white opposite the leaves. Stam. spikelets % an inch 

 to an inch long, sometimes pedunculate. Pistillate spikeUt % an inch to an inch 

 in length, the 2 upper ones (when there are 4) approximated and sessile. 

 Hob. Wet meadows: frequent. PL May. Fr. July. 



17. C. grisea, Wahl. Pistillate spikelets 3 to 6, often 4, oblong, 

 loosely flowered,- the lowest distant ; perigynia ovoid-oblong, rather 

 longer than the ovate cuspidate scale. 



C. laxiflora. Fl. Cestr. ed. 2. p. 38. not of Lam. 

 GRIZZLY CAREX. 



Plant glaucous. Culms 12 to 18 inches high, leafy. Leaves flat, the upper 

 ones, or bracts, surpassing the culm ; sheaths membranaceous and white opposite 

 be leaves. Stam. spikelets about an inch in length, inconspicuous. Pistillate 

 spikelets % an inch to near an inch long, rather few-flowered, the 2 upper ap- 

 proximated, with the staminate one between them, the lower ones distant, the 

 lowest on a long peduncle. 

 Hob. Shaded swamps, and wet meadows : frequent. Fl. May. Fr. July. 



t f Spikelets all on exserted filiform stalks, Gie upper one staminate at base ; the 

 rest all pistillate. { 



18. C. Davisii, Schiv. $ Torrey. Spikelets mostly 4, oblong- 

 cylindric ; perigynia ovoid-oblong, rather acute at each end, about 

 as long as the oblong conspicuously awned scale. 



C. Torreyana. Dewey, $ FL Cestr. ed. 2. p. 33. 

 DAVIS' s CAREX. 



Culms 1 to 2 feet high, leafy. Leaves flat, striate, slightly pubescent, the upper 

 ones a little longer than the culm ; sheaths pubescent. Spikelets ltol% inches 

 long, rather loose-flowered, the rachis somewhat flexuose. 

 Hah. Low grounds ; along Brandy wine : frequent. Fl. May. Fr. July. 



