Genus 18. 



SEDGE FAMILY. 



437 



230. Carex Schweinitzii Dewey. Schweinitz's Sedge. Fig. 1097. 



Carex Schweinitzii Dewey ; Schwein. Ann. Lye. N. Y. 

 1:71. 1824. 



Glabrous, light green, culm erect, roughish above, 

 i c -2i° tall, from long-creeping rootstocks. Leaves 

 elongated, 2i"-s" wide, the lower ones and the 

 similar bracts commonly overtopping the culm, those 

 of the culm mostly shorter; staminate spike solitary 

 or sometimes 2, slender-peduncled, the scales scarcely 

 awned; pistillate spikes 2-5, ascending, linear-cylin- 

 dric, not very densely flowered, ii'-3i' long, about 

 4"-7" thick, the upper usually sessile, the lower 

 stalked; perigynia light green, thin, somewhat in- 

 flated, ovoid-conic or oblong, contracted into the sub- 

 ulate, 2-toothed beak, 2V-34" long and 1" in diam- 

 eter, ascending, rather prominently several-nerved, 

 equalling or the upper longer than the broad-based, 

 somewhat rough-awned or scabrous scale; stigmas 3. 



In swamps and bogs, Vermont to Ontario, south to 

 Connecticut, New Jersey and Missouri. June-Aug. 



231. Carex hystricina Muhl. Porcupine Sedge. Fig. 1098. 



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



C. Cooleyi Dew. Am. Journ. Sci. 48: 144. 1845. 



C. hystricina Dudleyi Bailey, Mem. Torr. Club 1 : 54. 1889. 



Caespitose, glabrous, light green, culms slender, erect, 

 rough above, i°-3° tall, strongly reddened and occasionally 

 scabrous on lower sheaths. Leaves elongated, scabrous, 

 ii"-4" wide, the upper and the similar bracts overtopping 

 the culm; staminate spike slender-stalked, the scales rough- 

 awned; pistillate spikes 1-4, oblong or oblong-cylindric, 

 densely many-flowered, ¥-2$' long, s"-7" in diameter, the 

 upper sessile or nearly so, the lower slender-stalked and 

 spreading or drooping; perigynia greenish, ascending, some- 

 what inflated, ovoid-conic, 24"-3i" long, strongly 15-20- 

 nerved, contracted into the subulate 2-toothed beak, equal- 

 ling or the upper longer than the narrow rough-awned 

 scales; achene obovoid; stigmas 3. 



In swamps and low meadows, Newfoundland to Alberta, 

 south to Georgia, New Mexico and 1 Arizona. June-Aug. 



232. Carex Pseudo-Cyperus L. Cyperus-like 

 Sedge. Fig. 1099. 



Carex Pseudo-Cyperus L. Sp. PI. 978. 1753. 



Glabrous, culms rather stout, rough on the sharp 

 angles, at least above, 2°-34° high. Leaves elongated, 

 rough on the margins, nodulose, 2"-s" wide, the 

 upper and the similar bracts overtopping the culm ; 

 staminate spike short-stalked, the scales rough-awned ; 

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

 flowered, all slender-stalked and spreading or 

 drooping, i'-2i' long, 4"-6" in diameter; perigynia 

 rigid, short-stipitate, scarcely inflated, lanceolate, 

 prominently and closely many-ribbed, somewhat flat- 

 tened and triangular, at length reflexed, tapering into 

 a short 2-toothed beak, the short teeth slightly 

 spreading; scales linear with a broad base, rough- 

 awned, about equalling the perigynia; stigmas 3. 



In bogs, Nova Scotia to Saskatchewan, south to Con- 

 necticut, New York and Michigan. Also in Europe and 

 Asia, June-Aug. 



Asslli§ 



