Genus 18. 



SEDGE FAMILY. 



439 



236. Carex typhina Michx. Cat-tail Sedge. 



Fig. 1 103. 



Carex typhina Michx. Fl. Bor. Am. 2 : 169. 1803. 

 Carex typhinoides Schwein. Ann. Lye. 1 : 66. 1824. 

 Carex squarrosa var. typhinoides Dewey, Am. Journ. Sci. 

 11 : 316. 1826. 



Similar to the preceding species, but the leaves gen- 

 erally much broader, 2"-$' wide, the similar bracts 

 much overtopping the culm; spikes 1-6, generally 

 three, oblong-cylindric, very dense, the pistillate por- 

 tion i'-lf long, 4"-8" in diameter, often staminate at 

 both ends, the terminal one commonly tapering to a 

 conic summit; basal staminate flowers rather less 

 numerous than in C. squarrosa; perigynia dull straw- 

 color, obovoid, ascending or the lowest spreading or 

 reflexed, inflated, truncately contracted into the 

 slender 2-toothed beak, which is often upwardly bent ; 

 scales oblong-lanceolate, obtusish ; achene obovoid, ii" 

 long, sharply 3-angled with concave sides, tipped with 

 the slender style. 



In swamps, Quebec to Virginia, Louisiana, Iowa and 

 Missouri. July-Aug. 



237. Carex intumescens Rudge. Bladder Sedge. Fig. 1104. 



Carex intumescens Rudge, Trans. Linn. Soc. 7 : 97. pi. 9. f. 



3. 1804. 

 Carex intumescens Fernaldi Bailey, Bull. Torr. Club 20 : 



418. 1893. 



Glabrous, culms slender, commonly tufted, erect, 

 i4°-3° high. Leaves elongated, dark green, shorter 

 than or sometimes equalling the culm, roughish, ii"- 

 34" wide, the sheath a little prolonged; bracts similar, 

 overtopping the culm; staminate spike narrow, mostly 

 long-stalked; pistillate spikes 2 (1-3), sessile or short- 

 stalked, globular or nearly so; perigynia 1-12, spread- 

 ing or the upper erect, s"-io' long, much inflated, 

 about 2Y in diameter above the rounded base, many- 

 nerved, contracted into a subulate 2-toothed beak, the 

 teeth somewhat spreading at maturity ; scales narrowly 

 lanceolate, aristate, or obtuse in few-flowered northern 

 plants, about one-half as long as the perigynia; stig- 

 mas 3. 



In swamps, bogs and wet woods, Newfoundland to Mani- 

 toba, south to Florida and Louisiana. May-Oct. 



238. Carex Asa-Grayi Bailey. Gray's Sedge. • Fig. 1105. 



Carex intumescens var. globularis A. Gray, Ann. Lye. N. Y. 



3: 236. 1834. Not C. globularis L. 1753. 

 Carex Grayi Carey, Am. Journ. Sci. (II.) 4: 22. 1847. Not 



C. Grayana Dewey, 1834. 

 Carex Grayi hispidula A. Gray ; Bailey, Mem. Torr. Club 



1 : 54. 1889. 

 Carex Asa-Grayi Bailey, Bull. Torr. Club 20 : 427. 1893. 



Glabrous, culms stout, erect, 2°-3° tall. Leaves elon- 

 gated, dark green, 2V-4Y' wide, the upper commonly 

 overtopping the culm, the sheath not prolonged; bracts 

 similar to the upper leaves, usually much overtopping 

 the culm, short-sheathing; staminate spike mostly long- 

 stalked ; pistillate spikes 1 or 2, globose, dense, about 1' 

 in diameter; perigynia 6-30, 6"-p" long, ovoid, glabrous 

 or hispidulous, much inflated, many-ribbed, round-trun- 

 cate at base, about 3V in diameter above the base, con- 

 tracted into a sharp 2-toothed beak ; scales ovate, obtuse 

 ■to slightly cuspidate, scarious, about one-third as long 

 as the perigynia; stigmas 3. 



In swamps and wet meadows, Vermont to Michigan, south 

 to Georgia and Missouri. June-Sept. 



