CYPERACEAE. 20? 



85. Carex capillaris L. Hair-like Sedge. (I. F. f. 755.) Glabrous; 

 culms slender or filiform, 5-35 cm. tall. Leaves 1-2 mm. wide, much shorter than 

 the culm, roughish; lower bract similar, the upper much narrower; spikes filiform- 

 stalked, the terminal one staminate; pistillate spikes 1-3, 4-12 mm. long, 2 mm. 

 thick, nodding, 2- 12 -flowered; perigynia oblong, 3-angled, almost nerveless, about 



2 mm. long, the slender beak about one-third as long as the body; scales oval, 

 scarious-margined, shorter than the perigynia. Greenland to Alaska, Me., N. H., 

 N. V., Mich., and in the Rocky Mts. to Colo, and Utah. Also in Europe and Asia. 



86. Carex arctata Boott. Drooping Wood Sedge. (I. F. f. 756.) Gla- 

 brous, culms 3-6 dm. long. Leaves roughish-margined, much shorter than the 

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



3 mm. thick, many-flowered, ascending, or at length drooping and filiform-stalked; 

 perigynia oblong, rather strongly few-nerved, about 4 mm. long, less than 2 mm. 

 thick, 3-angled, tapering into a short 2-toothed beak; scales ovate, cuspidate or 

 short-awned, shorter than the perigynia. In dry woods and thickets, N. B. to 

 Minn., Penn. and Mich. May-June. 



Carex arctita Fdxoni Bailey. Spikes nearly erect, 2-4 of them clustered near the 

 summit, usually shorter, the staminate one very short; perigynia 4-5 mm. long. Quebec 

 to X. H., Minn, and Mich. 



Carex Knieskerni Dewey is probably a hybrid of C. arctata with C. castanea or C. 

 formosa. 



87. Carex tenuis Rudge. Slender-stalked Sedge. (I. F. f. 757.) Culms 

 rough above, 1-9 dm. long. Leaves 3-5 mm. wide; lower bracts similar; stami- 

 nate spike short-stalked; pistillate spikes 2-5. linear, 3 mm. thick, filiform-stalked 

 and spreading or drooping; perigynia spindle-shaped, glabrous or puberulent, 

 faintly few-nerved, obtusely 3-angled, 6 mm. long, less than 2 mm. thick, tapering 

 into a short 2-toothed beak; scales ovate or oblong, one- half as long as the peri- 

 gynia. In woods. Xewf. to Mich., N. Car. and Ky. May-Aug. A hybrid with 

 C. virescens occurs at Revere, Mass. 



Carex tenuis interjecta (Bailey) Britton. Pistillate spikes very slender, often com- 

 pound at the base, erect or nearly so, filiform-stalked, loosely flowered, the perigynia 

 alternate, only about 4 mm. long. X. Y. and Penn. 



Carex tenuis erectior Britton. Mostly taller and stouter than the type, and erect : 

 leaves about 4 mm. wide ; pistillate spikes erect or but slightly spreading; perigynia 

 5 mm. long, one-third longer than the scales. White Mts. 



88. Carex oblita Steud. Dark-green Sedge. (I. F. f. 758.) Glabrous; 

 culms sharply 3-angled, smooth or nearly so, 3-9 dm. long. Leaves 4-5 mm. 

 wide, shorter than the culm; lower bract similar; staminate spike solitary, filiform - 

 stalked; pistillate spikes 3-5. 2-6 cm. long, about 5 mm. thick, loosely flowered, 

 slender-stalked, the lower d'stant, drooping; perigynia 3-angled, glabrous, 6 mm. 

 long, less than 2 mm. thick, tapering into a short 2-toothed beak; scales obtuse, 

 about one-third the length of the perigynia. In bogs, central N. Y. and Penn. to 

 N. J. and X. Car. June-Aug. 



89. Carex grisea Wahl. Gray Sedge. (I. F. f. 759.) Glabrous; culms 

 smooth or nearly so. 3-6 dm. long. Leaves light green, sometimes slightly glau- 

 cous; bracts similar, much overtopping the spikes; staminate spike sessile; pistillate 

 spikes 3-5. oblong, 8-25 mm. long, about 4 mm. thick, the lower slender-stalked and 

 distant; perigynia 5 mm. long. 2 mm. thick; beakless; scales cuspidate or awned. 

 In woods and thickets. Me. to Ont. and Minn., X T . Car. and Kans. May-July. 



90. Carex amphibola Steud. Narrow-leaved Sedge. (I. F. f. 760.) 

 Glabrous; culms slender. 3-5 dm. long. Leaves 2-4 mm. wide; bracts similar, 

 erect, not over 2 mm. wide, overtopping the spikes; staminate spike short; pistil- 

 late spikes 2-4. 1-2.5 cm - l° n g> l ess than 4 mm. thick, loosely several-flowered, the 

 lower on filiform stalks; perigynia oblong or obovoid. firm, pointed, beakless, 

 3-angled. 4 mm. long, about 2 mm. thick; scales awned, spreading. In dry soil, 

 X. J. and Penn. to Iowa, Fla. and Tex. April-June. 



91. Carex flaccosperma Dewey. Thin-fruited Sedge. (I. F. f. 761.) 

 Similar to Carex grisea and C. glaucodea, slightly glaucous ; culms 3-6 dm. tall. 

 Leaves thin, the basal ones 6-12 mm. wide, the bracts leafy; staminate spike ses- 



OT nearly so; pistillate spikes 2-4, oblong, erect, the lower slender-stalked; 



