326 ' CYrERACE^E. '(SEDGE PAMILT.J 



86. C. Peillisylvinica, Lam. Sterile spike commonly on a dort stalk ; 

 fertile 1-3, usually 2, approximate, nearly sessile, ovoid, 4-bfi ttfered, the lowest 

 commonly with a colored scale-like lontj-awned bract; periy.itia roi nd!di-<icoid, with 

 a short and abrupt minutely-toothed lnak about the length of the ovate pointed ehcst- 

 mtt-colortd scale. (C. marginata, Mn!J.) Dry woods and hill-sides, New Eng- 

 l;md to Penn., Illinois, and northward. 



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

 very short stalks, ovoid, 6 - 1 Q-floicered ; the lowest, and sometimes the 2 lower, 

 with green leaf-like bracts; perigi/nia obovoid, with an abrupt distinctly toothed beak, 

 about the length of the ovate pointed light-brown scale. (C. Pennsylvania, var. 

 Mulltenbergii, ('>'ay, 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 clnb-sliapecl ; fertile 2 - -3, oblong-ovoid, 

 ayyrega*<d near 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 ; perigynia 

 ovoid-triangular, attenuated at tlte base, with a short beak and nearly entire orifice, 

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

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

 leaves short, rather rigid. (C. verna, Vi liars, Dew., not of Schk.) Rocky hills, 

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



89. C. KictiarclSdnii, R. Brown. Sterile spike pedimclcd, cylindrical; 

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

 like brownish and mostly short-pointed bracts ; perigynia obovoid-triangtdar, with 

 a tetperiih/ base, obtuse, nearly beakless, tli 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 (Sarticell), and northward. A 

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



90. C. put>csceiis, Muhl. Sterile spike usually sessile ; fertile 3-4, 06- 

 long or cylindrical, loosely flowered, somewhat approximated, or the lowest a little 

 remote, on a short stalk, with a narrow leaf-like bract about the height of the 

 culm; fruit omid and sharply triangular, downi/, attenuated at the base, with an 

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

 ly-pointed white scale ; en/in nnd leans toft-dotting, Moist woods and mee.lows^ 

 New England to Wisconsin and Kentucky. Ditl'ers from the other species of 



iion in its greater si/e and in aspect, and especially in the sharply angled 

 pengynium. 



7. Periejtfnic sUi/lithj inflated, irith a short beak, tertninatinff in ar entire or sliglitly 

 notcht (I <>///('.?; staminate spike solitary, stalked (in No. 91 usually pistillate 

 at the summit) : culms tall and leaf//. ANOM \ L;E.# 



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

 mit ; fertile spikes 3, cylindrical, rather slender, loosely llowcred at the base, on 



* The species here combined, merely to avoid the multiplication of small secMocs, do not 

 oourtitutu a natural group, but present certain points of affinity with several others. 



