C YPERA CEA . 195 



wet meadows, N. S. to Minn., Neb., Fla. and Tex. June -Oct. C. tentaculata 

 aider Boott is a hybrid with C. 



Carex lurida flaccida Bailey. Pistillate spikes 1-2.5 cm - l n g. brown, all sessile or 

 very nearly so, clustered at the summit, rather more loosely flowered. Northern N. Y. to 

 N. Car. and Tenn. 



Carex lurida parvula (Paine) Bailey. Culm 1-3.5 dm. high; pistillate spikes only i 

 or 2, scarcely more than i cm. long, globose or oblong, sessile or very nearly so; peri- 

 gynia 6 mm. long. N. H. to Penn. and Iowa. 



Carex lurida exiindans Bailey. Culms long and spreading; pistillate spikes 3-6 cm. 

 long, on very long stalks; scales subulate, the lower often much longer than the peri- 

 gynia. Occasional with the typical form. 



24. Carex Baileyi Britton. BAILEY'S SEDGE. (I. F. f. 694.) Glabrous; 

 culms erect or reclining, slender, minutely scabrous above, 0.2-0.5 m. long. Leaves 

 roughish, elongated, 3-4 mm. wide; staminate spike short-peduncled; pistillate 

 spikes 1-3, narrowly cylindric, very densely erect or ascending, 1.5-2.5 cm. long, 

 about 8 mm. in diameter; perigynia inflated, ovoid, 5-6 mm. long, ascending, ab- 

 ruptly contracted into the subulate 2 -toothed beak, prominently several-nerved. 

 Bogs, Vt. to Va. and Tenn. June-Aug. 



Spikes all erect or ascending. 25 C. Schwcinitzii. 



Spikes, at least the lower ones, slender-stalked and drooping. 



Pistillate spikes oblong-cylindric, 1.2-5 cm - l n & ; perigynia ascending. 



26. C, hystricina. 

 Pistillate spikes narrowly cylindric, 2.5-6 cm. long ; perigynia reflexed. 



Teeth of the beak erect or little spreading. 27. C. Pseudo-cyperus. 



Teeth of the beak recurved-spreading. 28. C, comosa. 



25. Carex Schweinitzii Dewey. SCHWEINITZ'S SEDGE. (I. F. f. 695.) 

 Glabrous; light green; culm roughish above, 0.3-0.8 m. tall. Leaves elongated, 

 5-8 mm. wide, those of the culm mostly short; staminate spike solitary or some- 

 times 2, often pistillate at the base or in the middle; pistillate spikes 3-5, ascend- 

 ing, linear-cylindric, 3-8 cm. long, about 8 mm. thick, the upper usually sessile, 

 the lower stalked; perigynia thin, somewhat inflated, ovoid-conic or oblong, taper- 

 ing into the subulate. 2-toothed beak, about 5 mm. long and 2 mm. in diameter, 

 ascending, few-nerved, equalling, or the upper logger than the lanceolate or linear 

 scale; stigmas 3. In swamps and bogs, Mass, to Orxt., Mich., N. J. and Mo. 

 June-Aug. 



26. Carex hystricina Muhl. PORCUPINE SEDGE. (I. F. f. 696.) Glabrous. 

 light green; culms 0.3-0.5 m. tall. Leaves 3-5 mm. wide; staminate-spike slen- 

 der-stalked; pistillate spikes, 1-4, oblong-cylindric, dense, 1-3 cm. long, about 9 

 mm. in diameter, the lower slender-stalked and drooping; perigynia ascending, 

 somewhat inflated, ovoid-conic, 5-6 mm. long, 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, N. S. to N. W. Terr., 

 Ga. and Neb. June-Aug. Said to hybridize with C. comosa. 



Carex hystricina Dudleyi Bailey. Culms often reclining, 0.5-0.9 m. long ; leaves 

 5-8 mm. wide ; staminate spike long-stalked ; pistillate spikes 3-6 cm. long, i cm. in di- 

 ameter, filiform-stalked. Me. to Conn., Penn. and Mich. 



27. Carex Pseudo-Cyperus L. CYPERUS-LIKE SEDGE. (I. F. f. 697.) 

 Glabrous; culms stout, rough on the angles, at least above, 0.5-1 m. high. Leaves 

 nodulose, 5-10 mm. wide; staminate spike short-stalked; pistillate spikes 2-5, 

 linear-cylindric, dense, slender-stalked, spreading or drooping, 2-7 cm. long, 6-8 

 mm. in diameter; 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, N. S. to Man- 

 itoba, Me., N. Y., and Mich. Also in Europe and Asia. June-Aug. 



28. Carex comosa Boott. BRISTLY SEDGE. (I. F. f. 698.) Similar to the 

 preceding species ; culms commonly stouter, the leaves sometimes 12 mm. wide. 

 Staminate spike sometimes pistillate at the summit ; pistillate spikes- 2-6, all 

 spreading or drooping, stouter and bristly, about 12 mm. iu diameter ; perigynia 



