Genus 18. 



SEDGE FAMILY. 



33i 



62. Carex cristatella Britton. Crested Sedge. Fig. 929. 



Carex cristata Schwein. Ann. Lye. N. Y. i : 66. 1824. 



Not Clairv. 1811. 

 Carex tribuloides var. cristata Bailey, Proc. Am. Acad. 



22: 148. 1886. 

 Carex cristatella Britton ; Brit. & Br. 111. Fl. 1 : 357. 1896. 



Culms rather stout, i°-3° tall, stiff, erect, roughish 

 above, longer than the leaves. Leaves il" _ 3i" wide, 

 those of sterile shoots numerous, spreading, the 

 sheaths loose; lower bracts bristle-form, J'-ii' long; 

 heads 6-15, globose or subglobose, 2"-^" in diameter, 

 all densely aggregated into an oblong head 1' long or 

 more or the lower slightly separated ; staminate flow- 

 ers basal; perigynia rather broadly lanceolate, dis- 

 tended over achene, spreading or ascending, squar- 

 rose when mature, green or greenish brown, iJ"-2" 

 long, I" wide, narrowly wing-margined, several- 

 nerved on both faces, tapering into a serrulate 

 2-toothed beak; scales lanceolate, straw-colored, 

 much shorter than the perigynia; achenes J" long. 



In meadows and thickets, eastern Massachusetts to 

 British Columbia, south to Virginia and Missouri. July- 

 Sept. 



63. Carex projecta Mackenzie. Necklace Sedge. Fig. 930. 



C. tribuloides var. reducta Bailey, Proc. Am. Acad. 22 : 



148. 1886. 

 C. tribuloides moniliformis Britton ; Brit. & Br. 111. Fl. 



1 : 356. 1896. 

 C. projecta Mackenzie, Bull. Torr. Club 35: 264. 1908. 



Culms erect, triangular and roughened above, 

 slender and weak, i*°-3° high, in large clumps. 

 Sterile culms leafy; leaves with long loose sheaths, 

 blades li"-3i" wide, shorter than culm; lower 

 bracts inconspicuous ; spikes 8-15, straw-colored, 

 with 15-30 perigynia, suborbicular, blunt, clavate at 

 base, 2i"~4" long, nearly as wide, alternately and 

 usually loosely arranged and forming a slender 

 flexuous head 1/-2' long; perigynia ascending- 

 spreading with divergent beaks, lanceolate, wing- 

 margined to the round-tapering base, i4"-aj" long, 

 I" wide at base, distended over achene, tapering into 

 a rough 2-toothed beak, shorter than the nerved 

 body; scales ovate-lanceolate, obtuse to acutish, 

 straw-colored, narrower and shorter than the peri- 

 gynia; achene 4" long. 



Damp soil. Nova Scotia to North Dakota, south to 

 District of Columbia and Illinois. May-July. 



64. Carex muskingumensis Schwein. Muskingum 

 Sedge. Fig. 931. 



Carex muskingumensis Schwein. Ann. Lye. N. Y. 1 : 66. 1824. 

 Carex arida Schwein. & Torr. Ann. Lye. N. Y. 1 : 312. 1825. 



Culm stout, stiff, erect, rough above, 2°-3° tall. Leaves 

 flat, long-pointed, il"-2i" wide, subcordate at base, shorter 

 than the fertile culms, those of sterile culms very numer- 

 ous, crowded near the summit, somewhat distichous; 

 bracts very short and scale-like; spikes 5-12, oblong- 

 cylindric, densely many-flowered, 7V-13" long. 2$"-3S 

 in diameter, erect, approximate, pale brown, narrowed and 

 staminate at the base; perigynia narrowly lanceolate, 

 closely appressed, $¥'-$" long and li" wide, strongly 

 several-nerved, very flat, narrowed to both ends, scarious- 

 margined, rough-ciliate, the beak strongly bidentate; scales 

 ovate-lanceolate, obtusish or acute, about ^one-half as long 

 as the perigynia ; achene linear-oblong, ii" long ; stigmas 2. 



In moist woods and thickets, Ohio to Manitoba, Missouri and 

 eastern Kansas. June-Aug. 



