400 



CYPERACEAE. 



Vol. I. 



119. Carex Careyana Torr. Carey's Sedge. 

 Fig. 986. 



Carex Careyana Torr. ; Dewey, Am. Journ. Sci. 30 : 60. 

 f. 88. 1836. 



Glabrous, bright green, culms slender, erect or 

 somewhat reclining, smooth or nearly so, i°-2i° tall. 

 Basal leaves flat, 3-6" wide, much shorter than the 

 culm; bracts narrow, short, with very long purplish- 

 tinged sheaths; staminate spike usually long-stalked, 

 large; pistillate spikes 1-3, erect, loosely 3-8-fIow- 

 ered, less than 1' long, the upper short-stalked and 

 approximate, the lower long-stalked and remote; 

 perigynia ovoid-elliptic, very sharply 3-angled, many- 

 nerved, 2i" long or more and over 1" thick, the 

 short beak slightly oblique, entire ; scales ovate with 

 hyaline margins, cuspidate or awned, about half 

 length of perigynia; stigmas 3. 



In woodsj New York to Michigan, south to District of 

 Columbia, Virginia and extreme southern Missouri. 

 May-June. 



120. Carex platyphylla Carey. Broad-leaved Sedge. Fig. 987. 



Carex platyphylla Carey, Am. Journ. Sci. (II.) 4: 23. 

 1847. 



Glabrous, pale green and glaucous, culms slender, 

 spreading or reclining, 4/-15' long. Leaves of sterile 

 culms flat and broad, 44"-l2" wide, shorter than the 

 culm, very smooth (except edges) ; those of fertile 

 culms much reduced ; bracts with long clasping 

 sheaths, usually less than 2' long; staminate spike 

 stalked; pistillate spikes 2-4, distant, erect, all slen- 

 der-stalked or the upper one nearly sessile, loosely 

 4-10-flowered, s"-io" long; perigynia ovoid-elliptic, 

 3-angled, many-nerved, slightly bent or nearly 

 straight at the narrowed or short-beaked apex, ii"- 

 il" long, rather more than i" thick, somewhat longer 

 than the broadly ovate, acute, cuspidate or short- 

 awned scales; stigmas 3. 



In woods and thickets, Quebec and Ontario to Mich- 

 igan, south to Virginia and Illinois. Ascends to 2500 

 it. in Virginia. May-June. 



121. Carex abscondita Mackenzie. Thicket Sedge. Fig. 988. 



Carex ptychocarpa Steud. Syn. PI. Cyp. 234. 1855. Not 



Link, 1799. 

 Carex abscondita Mackenzie, Bull. Torr. Club 37 : 244. 



1910. 



Glabrous, pale green and glaucous, culms erect, 

 very slender, smooth, only 2'-8' tall. Leaves flat, 

 the larger 2"-4*" wide, much longer than the culm; 

 bract of second pistillate spike usually overtopping 

 the culm; staminate spike small, 2"-4i" long, sessile 

 or nearly so; pistillate spikes 2 or 3, approximate, 

 sessile or short-peduncled, or the lower one slender- 

 stalked and nearly basal, all erect, loosely 5-10-flow- 

 ered, 4"-8" long; perigynia oblong-ovoid, pale, 

 sharply 3-angled, finely many-nerved, about ij" long, 

 rather more than \" thick, pointed at both ends ; 

 minutely straight-beaked or slightly bent, the orifice 

 entire ; scales ovate, thin, obtuse to short-cuspidate, 

 about one-half as long as the perigynia; stigmas 3. 



In moist woods and thickets, Massachusetts and New 

 Jersey to Florida and Louisiana. Local. June-July. 



