CYPERACEAE. 1 95 



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

 altior Boott is a hybrid with C. lupidina. 



Carex liirida flaceida Bailey. Pistillate spikes 1-2.5 cm - long, brown, all sessile or 

 very nearly so, clustered at the summit, rather more loosely flowered. Me., N. H. and 

 N. Y. to N. Car. and Tenn. 



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

 or 2, scarcely more than 1 cm. long, globose or oblong, sessile or very nearly so; peri- 

 gynia 6 mm. long. N. H. to Perm, 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 - l° n g- Leaves 

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

 spikes 1-3, narrowly cylindric, very densely erector 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. Schwetnttzit. 



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



Pistillate spikes oblong-cylindric, 1.2-5 cm. long ■ 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. cotnosa. 



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 Ont, 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. coi/iosa. 



Carex hystricina Diidleyi 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, 1 cm. in di- 

 ameter, fiiiform-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 combsa 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. in diameter ; perigynia 



