300 



CVPERACEAE. 



Carex Schweinitzii Dewey. Schweinitz's Sedge. (Fig. 695.) 



Carex Schweinitxii Dewey; Schwein. Ann. Lye. X. 

 V. i: 71. 1824. 



Glabrous, light green, culm erect, roughish 

 above, i-2*4 tall. Leaves elongated, 2y z "-\" 

 wide, the basal ones and the similar bracts com- 

 monly overtopping the culm, those of the culm 

 mostly shorter; staminate spike solitary or some- 

 times 2, often pistillate at the base or in the mid- 

 dle; pistillate spikes 3-5, ascending, linear-cylin- 

 dric, not very densely flowered, ij'-3' long, 

 about 4" thick, the upper usually sessile, the lower 

 stalked; perigynia thin, somewhat inflated, ovoid- 

 conic or oblong, tapering into the subulate, 2- 

 toothed beak, about 2.y z " long and \" in diameter, 

 ascending, rather prominently few-nerved, equal- 

 ling or the upper longer than the lanceolate or 

 linear, usually ciliate -scabrous scale; stigmas 3. 



In swamps and bogs, Massachusetts to Ontario. 

 Michigan, New Jersey and Missouri. June-Aug. 



26. Carex hystricina Muhl. Porcupine Sedge. (Fig. 696.) 



Carex hystricina Muhl.; Willd. Sp. PI. 4: 282. 1805. 



Glabrous, light green, culms slender, erect or reclining, 

 somewhat rough above, i-2 tall. Leaves elongated, 

 minutely scabrous, i^ // -2^ // wide, the upper and the 

 similar bracts overtopping the culm ; staminate spike slen- 

 der-stalked, sometimes pistillate at the summit; pistil- 

 late spikes 1-4, oblong-cylindric, densely many -flowered, 

 y-t'-iYz' long, about 4%" in diameter, the upper sessile 

 or nearly so, the lower slender-stalked and drooping; 

 perigynia ascending, somewhat inflated, ovoid-conic, 

 2> // -3 // l n g, strongly many-nerved, tapering into the 

 subulate 2-toothed beak, equalling or the upper longer 

 than the narrow rough scales; stigmas 3. 



In swamps and low meadows, Nova Scotia to the North- 

 west Territory, south to Georgia and Nebraska. June-Aug. 



Carex hystricina Dudley! Bailey. Mem. Torr. Club, i: 54. 

 1889. 



Culms often reclining, 2-3 long; leaves 2%" -4" wide; 

 staminate spike long-stalked; pistillate spikes i}4'-2 l A 

 long, 5" in diameter, filiform-stalked. Maine to Connecticut, 

 western Xew York, Pennsylvania and Michigan. 



27. Carex Pseudo-Cyperus L,. Cyperus-like Sedge. (Fig. 697.) 



Care.v Pseudo-Cyperus L. Sp. PI. 978. 1753. 



Glabrous, culms rather stout, rough on the shaq> 

 angles, at least above, 2-3 high. Leaves elon- 

 gated, rough on the margins, nodulose, 2 ^"-5" 

 wide, the upper and the similar bracts overtopping 

 the culm; staminate spike short-stalked; pistillate 

 spikes 2-5, linear-cylindric, densely many-flowered, 

 all slender-stalked and spreading or drooping, i '-. 

 2*4' long, 3 // -4 // in diameter, the stalk of the low- 

 est one sometimes 2' long; perigynia light green. 

 slightly inflated, conic, prominently many-ribbed, 

 somewhat flattened, at length reflexed. tapering 

 into a short 2-toothed beak, the short teeth slightly 

 spreading; scales linear with a broad base, ciliate- 

 scabrous, about equalling the perigynia; stigmas 3. 



In bogs, Nova Scotia to Manitoba, Maine, New York. 

 and Michigan. Also in Europe and Asia. June-Aug. 



