CYPERACEAE 209 



22. Carex Joorii Bailey. Stems and scapes about 6 dm. tall, scabrous, sharply 

 angled : leaves surpassing the stem ; blades narrowly linear, slightly keeled,_ with rough 

 margins : bracts mostly setaceous, without sheaths, the lower 1 or 2 surpassing the sub- 

 tended spikes : starainate spike terminal : pistillate spikes remote from the staniinate, 

 often 5 or 6, dense, cylindric, 2.5-5 cm. long, erect or slightly spreading, slender-pe- 

 duncled: scales hvaline, the serrate awns about as long as the perigynia : perigynia dark- 

 colored, short-obovoid, nearly terete, granular, strongly many-nerved, each abruptly con- 

 tracted into a beak about h as long as the body. 



In the Comite swamp, Baton Rouge, Louisiana. Summer. 



23. Carex vestita Willd. Stems and scapes strict and slender, 4-8 dm. tall, rough 

 above : leaves not overtopping the scape ; blades 3-5 mm. wide : bracts similar, but nar- 

 rower, short, rougli-ciliate : staminate spike usually solitary, almost sessile: pistillate 

 spikes 1-5, oblong, 1-2 cm. long, 6-8 mm. in diameter, erect, commonly staminate at the 

 summit, sessile, or the lower ones short-stalked : perigynia ovoid, densely pubescent, less 

 than 2 mm. in diameter, prominently few-ribbed, each tapering gradually into a short conic 

 2-toothed whitish beak, slightly shorter than or equalling the ovate, acute, membranous 

 scales. 



In sandy woods, New Hampshire to]Pennsylvania and Georgia. Summer. 



24. Carex Walteri^na Bailey. Stems and scapes slender, strict, usually rough 

 above, 3-8 dm. tall : leaves not overtopping the scape ; blades narrow, elongated, 2-4 

 mm. wide, nodulose : lowest bract similar, the upper smaller, often almost filiform : stam- 

 inate spikes 2-5, long-stalked : pistillate spikes 1 or 2, when 2 the lower one remote from 

 the upper, sessile or short-stalked, oblong-cylindric, erect, 2-4 cm. long, about 8 mm. in 

 diameter, rather loosely raany-fiowered : scales ovate, acute, short-aristate or obtuse, mem- 

 branous, h the length of the perigynia: perigynia ovoid, purple-brown, many-nerved, 

 slightly inflated, glabrous or pubescent, 3 ram/in diameter, each tapering into a short 

 2-toothed beak. [C. striata Michx.] 



In pine-land bogs, southern New Jersey to Florida. Spring and summer. 



25. Carex lanuginosa Michx. Stems and scapes slender, but usually rather stouter 

 than those of C. Jilifonnis, sharp-angled and rough above. Leaves and the lower bracts 

 elongated ; blades not involute, 2-4 mm. wide, sometimes overtopping the scapes : stam- 

 inate spikes 1-3, long-stalked, sometimes pistillate at the base : pistillate spikes 1-3, 

 usually distant, sessile or the lower slender-stalked, cylindric, 5-6 mm. in diameter: 

 scales acuminate or arista te. 



In swamps and wet meadows, Nova Scotia to British Columbia, south to New Jersey, North Caro- 

 lina (according to Torrey), Kansas, New Mexico and California. Summer. 



26. Carex filiformis L. Stems and scapes very slender, erect or reclining, smooth, 

 obtusely angled, 5-9 dm. long. Leaf-blades very narrow, involute, about 2 mm. wide, 

 rough margined, not overtopping the scape : lower bracts similar to the leaves, upper bracts 

 filiform : flowers occasionally dioecious : staminate spikes 1-3, commonly 2, stalked : pistil- 

 late spikes 1-3, cylindric, 1.5-2 cm. long, about 6 mm. in diameter, erect, sessile, or the 

 lower distant and short-peduncled : scales ovate, membranous, acute or short-awned, shorter 

 than or equalling the perigynia : perigynia green, ascending, oval, densely pubescent, 

 faintly nerved, about 2 mm. in diameter, each tapering into a short 2-toothed beak. 



In wet meadows and swamps, Newfoundland to British Columbia, New Jersey, Pennsylvania, 

 South Carolina (according to Torrey) and Iowa. Also in Europe. Summer. 



27. Carex hirta L. Stems and scapes rather slender, nearly smooth, 1.5-4 dm. tall : 

 leaf-blades flat, pubescent, but mostly less densely so than the sheaths, 3-5 mm. wide, the 

 basal ones much elongated, the upper, and the similar bracts, shorter : staminate spikes 2 or 

 3, stalked : pistillate spikes 2 or 3, remote, erect, oblong-cylindric, 2-3 cm. long,_ about 6 

 mm. in diameter : scales lanceolate, aristate, 3-nerved, shorter than the perigynia :_ peri- 

 gynia ovoid-oblong, green, densely pubescent, 2 mm. in diameter, 4 mm. long, few-ribbed, 

 each tapering into a prominently 2-toothed beak, the teeth often as long as the beak. 



In fields and waste places, Massachusetts to eastern New York, Pennsylvania and Tennessee. 

 Naturalized or adventive from Europe. Summer and fall. 



28. Carex fusca All. Stems and scapes slender, stiff, sharp-angled, rough above, 

 3-9 dm. tall : leaves rough ; blades erect, 2-4 mm. wide : spikes 2-4, oblong or cylindric, 

 erect, allfsessile and close together, or the lowest sometimes distant and short-stalked, 

 8-37 mm. long, about 8 mm. in diameter, the terminal one staminate at thebase or rarely 

 throughout: scales ovate, awn-tipped, black or dark brown with a green midve-in, longer 

 than the perigynia : perigynia elliptic or obovate, flat, ascending, 2 mm. long, light green, 

 faintly few-nerved, beakless, the apex minutely 2-toothed. [C Buxbaumii Wahl.] 



In bogs, Newfoundland to Alaska, south to Georgia, Kentucky, Utah and California. Also in 

 Europe. Spring and summer. 

 14 



