CYPERACEAE. 



Vol. I. 



29. Carex setacea Dewey. Bristly-spiked 

 Sedge. Fig. 896. 



Carex setacea Dewey, Am. Journ. Sci. 9: 61. 1825. 



Carex scabrior Sartw. ; Boott, 111. 3: 125. 1862. 



Culms ii°-4° tall and slender, erect, rough above. 

 Leaves i°-2° long, i"-3" wide, shorter than the 

 culm; sheaths red-dotted and rugulose; head nar- 

 rowly oblong, li'-2i' long, 3"~s" thick, sometimes 

 branched at the base; bracts bristle-like, longer than 

 the spikes or shorter; spikes androgynous, ovoid or 

 ovoid-oblong, 2i"-4" long, usually close together ; 

 perigynia dull at maturity, ii" long, lanceolate or 

 ovate-lanceolate, tapering from a more or less trun- 

 cate base to a narrow rough 2-toothed beak, few- 

 nerved on outer face; scales acuminate, short- 

 awn ed. 



Vermont to Ontario, south to Maryland and Ken- 

 tucky. June-Aug. 



30. Carex diandra Schrank. Lesser Panicled Sedge. Fig. 897. 



Carex diandra Schrank, in Acta Acad. Mogunt. 49. 1782. 

 Carex teretiuscula Gooden. Trans. Linn. Soc. 2: 163. pi. 

 19. 1794- 



Loosely caespitose from short rootstocks, rather 

 light green, culms slender, erect, very rough above, 

 i° _ 3° tall. Leaves i"-ii" wide, shorter than or 

 sometimes equalling the culm, the lower sheaths 

 reddish-brown dotted ; bracts very small or scale- 

 like; spikes several or numerous, staminate above, 

 in a narrowly oblong compact or somewhat inter- 

 rupted terminal cluster i'-a' long, 5" thick or less ; 

 perigynia broadly ovoid, smooth, dark brown, very 

 plump, hard, shining, strongly rounded and nerved 

 on the outer side, slightly rounded and faintly nerved 

 at base on the inner, i"-ii" long, not margined, the 

 body slightly more than i" long, suborbicular, trun- 

 cate or rounded at the base, short-stalked, tapering 

 into a flat conic beak nearly its own length; scales 

 thin, ovate, brownish, acute or short-awned, about 

 equalling the perigynia ; stigmas 2. 



In swamps and wet meadows, Nova Scotia to Alaska, 

 south to Rhode Island, Pennsylvania, Nebraska and 

 British Columbia. Also in Europe and Asia. May-July. 



31. Carex prairea Dewey. Prairie Sedge. 

 Fig. 898. 



Carex prairea Dewey, in Wood's Classbook, 578. 1855. 

 Carex teretiuscula var. ramosa Boott, 111. Car. 145. 1867. 

 C. teretiuscula prairea Britton, Brit. & Br. 111. Fl. 1 : 344. 

 1896. 



Loosely caespitose from short rootstocks, the culms 

 sharply triangular, slender, erect, rough above, il°-4° 

 tall. Leaves \"-\\" wide, shorter than culm, lower 

 sheaths reddish-brown dotted; bracts small or scale- 

 like ; spikes many, androgynous, clusters widely 

 separate, lower usually compound, forming a flexuous 

 nodding head ii-3' long, often more than 5" wide; 

 perigynia ovoid, smooth, light brown, plump, hard, 

 rounded and obscurely nerved on the outer side, flat- 

 tish on inner, il"-ii" long, not margined, round- 

 truncate at base, slightly stipitate, tapering into a flat 

 beak shorter than body ; scales thin, ovate, light brown 

 with broad hyaline margins, acuminate or short- 

 awned, usually exceeding perigynia; stigmas 2. 



In wet meadows, Quebec to British Columbia, south to 

 Connecticut, New Jersey, Kentucky and Utah. May- 

 July. 



