526 CYI-ERACEJS. (SEDGE IAMILT.; 



86. C. Pennsylvania, Lam. Sterile spike commonly on a short stalk; 

 fertile 1-3, usually 2, approximate, nearly sessile, ovoid, 4 - G-Ji tircred, lite lowest 

 commonly with a colored .wait -lib- lony-aa-ind draft ; periysnia rot itdiah-oroid, with 

 a. sliort and abrupt mittutdy-toothed hale about the length of the ovate pointed fliest- 

 nut-colored scale. (C. marginata, Mnld.} Dry woods and hill-sides, New Eng- 

 land to Perm., Illinois, and northward. 



87. C. Vfiria, Muhl. Sterile spike sessile; fertile 2-3, mostly 3, distinct, on 

 very short stalks, ovoid, 6 10-JJowered; the lowest, and sometimes the 2 lower, 

 with </renn leaf-Wee bracts ; perigi/nia obouoid, with an abrupt distinctly toothed beak, 

 about the length of the ovate pointed liyht-broivn scale. (C. Pennsylvania^ var. 

 Muhlenbergii, Gray, Gram. $* Cyp.) Dry wooded hills; common, especially 

 northward. Closely resembles the last; but has wider, shorter, and more rigid 

 glaucous leaves. 



88. C PR^cox, Jacq. Sterile spike club-shaped; fertile 2-3, oblong-ovoid, 

 aggregated mar the base of the sterile spike, sessile, or the lowest sometimes on a 

 very short stalk, with a leaf-like bract scarcely exceeding the spike ; )>eri<;ynia 

 ovoid-triangular, attenuated at the base, with a shoi't beak and n<arlt/ entire orifice, 

 about equal to the ovate pointed dark-brown scale ; achenitim obovoid with a 

 prominent ring at the apex surrounding the base of the style ; culm .3' -6' high ; 

 leaves short, rather rigid. (C. vema, Villars, Dew., not of Schk.) Rocky hills, 

 Salem and Ipswich, Massachusetts. (Nat. from Eu.) 



89. C. Kichardsonii, II. Brown. Sterile spike pedunded, cylindrical ; 

 fertile 1 or 2, sessile or short-stalked, approximate, oblong, longer than the scale- 

 like brownish and mostly short-pointed bracts ; periyynia obocoid-trianyular, icith 

 a ta i H ring base, obtuse, nearly bcakless, the short point with an almost entire orifice, 

 rather shorter than the ovate acutish brown or chestnut-colored scale ; culm 

 (5' -9' high) and rigid leaves rough. Dry ground, near Rochester, New York 

 (Dewey) ; prairies of Illinois (Mead) ; Wisconsin (SartweU), and northward. A 

 well-marked species, in aspect most like No. 86. 



90. C. pllbcscens, Muhl. Sterile spike usually sessile ; fertile 3 - 4, ob- 

 lony or cylindrical, loosely Jlowercd, somewhat approximated, or the lowest a little 

 remote, on a shoi't stalk, with a narrow leaf-like bract about the height of the 

 culm ; fruit ovoid and sharply triangular, downy, attenuated at the base, with an 

 abrupt, slender beaL nearly entire at the orifice, a little longer than the ovate abrupt- 

 ly-pointed white scale; cnlin and leaccn soft-dote iiy. Moist woods and meadowy 

 New England to Wisconsin and Kentucky. Differs from the other species of 

 this section in its greater size and in aspect, and especially in the sharply anck-d 

 perigynium. 



7. Perigynic slightly inflated, with a short beak, termiimting in an entire or s/ight/y 

 notched or (fi i : stamiiwtr spike solitary, stalked (in No. 91 usually pi>tillate 

 at the summit) : culms tall and l<af'/. ANOMAI^K.* 



91. C. miliucea, Muhl. Staminate spike commonly fertile at the sum- 

 mit; fu-til< .sy;//vx ',}, cylindrical, rather slender, loosely tlowcn-d at the base, on 



The species here combined, merely to avoid the multiplication of Miiall swtious, (l 

 ite a natural group, but present certain points of aflinity with several others. 



