320 



86. 



Carex arctata 

 Sedge. 



CYPERACEAE. 



85. Carex capillaris L/. Hair-like Sedge. 

 (Fig- 755-) 



Carex capillaris L. Sp. PI. 977. 1753- 



Glabrous, culms slender or filiform, smooth or 

 roughish above, erect, 2 / -i4 / tall. Leaves %"-\' r 

 wide, much shorter than the culm, flat or somewhat 

 involute in drying, roughish; lower bract similar, the 

 upper much narrower, all sheathing; spikes all fili- 

 form-stalked, the terminal one staminate; pistillate 

 spikes 1-3, narrowly oblong, 2 // -6 // long, i" thick, 

 nodding, 2- 12- flowered; perigynia oblong, 3-angled, 

 light green, almost nerveless, about \" long, rather 

 less than YZ" thick, the slender beak about one-third 

 as long as the body; scales oval, scarious-margined, 

 shorter than the perigynia; stigmas 3. 



Greenland to Alaska, Maine, the White Mountains, 

 northern New York. Michigan, and in the Rocky Moun- 

 tains to Colorado and Utah. Also in Europe and Asia. 



Boott. Drooping Wood 

 (Fig. 756.) 



Carex arctata Boott; Hook. Fl. Bor. Am. 2: 227. 1840. 

 Glabrous, culms slender, erect or reclining, i-2^ 

 long, roughish above. Leaves flat, roughish-mar- 

 gined, much shorter than the culm, the basal ones 

 3 // -5 // wide; staminate spike solitary, short-stalked; 

 pistillate spikes 2-5, linear, 1'-$' long, i%" thick, 

 loosely many-flowered, erect, ascending, or at length 

 drooping and filiform-stalked, the lower one usually 

 remote; perigynia oblong, or thickest below the mid- 

 dle, rather strongly few-nerved, narrowed at each 

 end, about v" long, less than \ f/ thick, 3-angled, 

 tapering into a short 2-toothed beak; scales ovate, 

 cuspidate or short-awned, about one-third shorter 

 than the perigynia; stigmas 3. 



In dry woods and thickets, New Brunswick to Minne- 

 sota, south to Pennsylvania and Michigan. May-June. 



Carex Knieskerni Dewey, is probably a hybrid with C. castanea or C.formosa. 



Carex arctata Faxoni Bailey, Coult. Bot. Gaz. 13: 87. 1888. 



Spikes nearly erect, 2-4 of them clustered near the summit, usually shorter, the staminate one 

 very short; perigynia 2"-2 l A" long. Quebec to New Hampshire, Minnesota and Michigan. 



87. Carex tenuis Rudge. Slender-stalked Sedge. (Fig. 757.) 



Carex tenuis Rudge, Trans. Linn. Soc. 7: 97. pi. 9. 1804. 

 Carex debilis Boott, 111. pi. 272. 1860. Not Michx. 1803. 

 C. debilis var. JRudgei Bailey, Mem.Torr. Club, i : 34. 1889. 



Culms slender, rough above, erect or commonly re- 

 clining, 4 / -3 long. Leaves shorter than the culm or 

 equalling it, light green, i^ // -2^ // wide; lower bracts 

 similar to the culm-leaves, sometimes overtopping the 

 spikes; staminate spike short-stalked; pistillate spikes 

 2-5, linear, i'-^' long, 1%" thick, filiform-stalked 

 and spreading or drooping; perigynia spindle-shaped, 

 glabrous or puberulent, faintly few-nerved, obtusely 

 3-angled, 3" long, less than i" thick, tapering into a 

 short 2-toothed beak; scales ovate or oblong, acute, 

 cuspidate or obtuse, scarious-margined, one-half as 

 long as the perigynia; stigmas 3. 



In woods, Newfoundland to Michigan, Virginia, the 

 mountains of North Carolina and Kentucky. May-Aug. 



A hybrid with C. virescens occurs at Revere, 



Carex tenuis interjecta (Bailey) Britton. 

 Carex debilis var. interjecta Bailey, Bull. Torr. Club, 20: 418. 1893. 



Pistillate spikes very slender, often compound at the base, erect or nearly so, filiform-stalked, 

 very loosely flowered, the perigynia alternate, only about 2" long. New York and Pennsylvania. 



