298 



CYPERACEAE. 



Carex monile monstrosa Bailey, Mem. Torr. Club, i: 40. 1889. A form with the terminal spike 

 more or less pistillate, the pistillate spikes very small and loosely flowered, usually on very long 

 stalks, found several years ago along the Concord River, Mass., has not since been collected. 



19. Carex Tuckermani Dewey. Tuck- 

 et-man's Sedge. (Fig. 689.) 



C. Tuckermani Dewey, Am. Journ. Sci. 49: 48. 1845. 

 Glabrous, culm very slender, usually roughish 

 above, erect or reclining, 2 -5%. long. Leaves 

 and bracts much elongated, commonly much 

 overtopping the culm, i%"-2%" wide, some- 

 times sparingly nodulose; staminate spikes 2 or 

 3; pistillate spikes stout, cylindric, I'-a' long, 

 about Yz' in diameter; the upper sessile or nearly 

 so, the lower stalked and usually spreading; 

 perigynia very much inflated, yellowish -green, 

 ovoid, prominently few-nerved, ascending, 

 abruptly contracted into a subulate 2-toothed 

 beak; scales lanceolate, smooth -awned, about 

 half as long as the perigynia; stigmas 3. 



In bogs and meadows. New Brunswick to Ontario, 

 New Jersey, Michigan and Minnesota. June-Aug. 



20. Carex bullata Schk. Button Sedge. 

 (Fig. 690.) 



Care.i bullata Schk. Riedg. Nachtr. 85. /. 166. 1806. 



Glabrous, culms very slender, erect, i-2> high, rough- 

 ish above. Leaves and bracts very narrow and elongated, 

 rather stiff, commonly overtopping the culm, rarely more 

 than 2" wide, rough -margined, sparingly nodulose; stamin- 

 ate spikes mostly 2, long stalked; pistillate spikes 1-3, usually 

 2, light green, varying from almost sessile to long-stalked 

 and spreading, many-flowered, oblong or oblong-cylindric , 

 I'-i^' long, 4> // -6" in diameter; perigynia much inflated, 

 ovoid, 2^ // -3 // long, spreading when mature, tapering into 

 a subulate rough 2-toothed beak, shining, strongly nerved, 

 2-3 times longer than the lanceolate acuminate or acute 

 scale, or the uppermost scales obtuse; stigmas 3. 



In swamps, Massachusetts to North Carolina. June-Aug. 



21. Carex retrorsa Schwein. Retrorse Sedge. 



(Fig. 691.) 



Lye. N. V. i: 71. 



Care.i- retrorsa Schwein. Ann 



1824. 



Glabrous, ciilm stout, erect, smooth or slightly 

 rough above, i -3^ tall. Leaves elongated, 

 thin, rough-margined, sparingly nodulost 

 3/4" wide, the upper commonly exceeding the 

 culm, the bracts similar, usually much overtop- 

 ping the culm; staminate spikes 1-3, short- 

 stalked; pistillate spikes 3-6, ascending or 

 spreading, all close together at the summit and 

 sessile or very nearly so or the lowest distant 

 and stalked, cylindric, densely many-flowered, 

 i / -2 / long, about */*' in diameter; perigynia 

 ovoid, membranous, strongly few-nerved, yel- 

 lowish green, about 3" long, reflexed at ma- 

 turity, tapering into a subulate 2-toothed beak; 

 scales lanceolate, acute, smooth, one-third to- 

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



In swamps and wet meadows, Nova Scotia to Manitoba, south to Massachusetts, Pennsylvania. 

 Michigan and Minnesota. Also in Oregon (according to Bailey). Aug.-Sept. 



