606 CYPERACE^. (sedge FAMILY.) 



compact, sliort-oblong to cylindric, never exceeding 1' in length ; staminate 

 spike small and usually sessile; perigynium OA'oid, very strougly nerved, the 

 nearly entire short beak usually bent ; scale thin and pointed, about ^ the 

 length of the perigynium. — Moist grassy places ; common. — Var HaleXna. 

 Porter. Habitually lower and more slender ; radical leaves very broad (3-4'") 

 and more glaucous ; pistillate spikes ^' long or less, thinner ; perigynium a 

 half smaller, narrower. Wise, to Va. ; infrequent. 



61. C. Crawei, I^ewey. Low, strict, stoloniferous (4- 12' high) ; leaves 



narrow' ; bracts scarcely exceeding tlie culm ; spikes 2-4, scattered, the lowest 



radical or nearly so, short-peduncled or the upper sessile, erect, compact, 9" 



long or less ; staminate spike generally peduncled ; perigynium ovate, usually 



resinous-dotted, obscurely or few-nerved, very short-pointed, longer than the 



obtuse or short-pointed scale. — Moist places, N. Y. to 111. and Minn. ; local, 



especially eastward. 



* 5. — -4-2. Extensce. 



C. EXTENSA, Gooden. Slender but strict, 1-2° high ; leaves involute , 

 spikes about 3, the lowest remote and short-peduncled, the remainder approx- 

 imate and sessile, short (about ^ long) and compact; perigynium ovate, very 

 strougly nerved, ascending, the short stout beak sharply toothed, longer than 

 the blunt brown-edged scale. — Long Island and Coney Island, X. Y. ; Norfolk, 

 Va., McMinn. (Nat. from Eu.) 



62. C. flava, L. Very slender but strict and stiff, 1-2° high, yellowish 

 throughout ; leaves flat but narrow, mostly shorter than the culm ; staminate 

 spike sessile or nearly so, usually oblique; pistillate spikes 2-4, all contigu- 

 ous or rarely the lowest one remote, all but the lowest sessile, short-oblong or 

 globular, densely flo-\vered, the lowest subtended by a long divaricate bract; 

 perigynium ovate, produced into a defiexed beak as long as tlie body, strongly 

 nerved, thrice longer than the blunt scale. — Swales and wet meadows, N. Eng. 

 to L. Superior; rare westward. (Eu.) — Var. grAminis, Bailey. Smaller and 

 green, 6- 12' high; leaves mostly longer than the culm; bracts erect; peri- 

 gynium straight or nearly so, the beak often rough. Grassy places, probably 

 common and generally distributed. 



Var. viridula, Bailey. Small and slender, very strict, green or greenish- 

 white ; leaves narrow, equalling or exceeding the culm ; bracts long and 

 strictly erect ; spikes very small or sometimes becoming cylindric, more closely 

 aggregated ; perigynium conspicuously smaller, the beak very short and 

 straight. (C. CEderi, last ed.) — Cold bogs, N. Eng. to Penn., and northwest- 

 ward; local. 



* 5. — -»- 3. PaUescentes. 



•*-<• Perigijnium ivhoUi/ beahless. 



63. C. pallescens, L. Slender, erect, 4' -2° high, tufted; leaves nar 

 row, flat, the lower slightly pubescent, particularly on tlie sheaths ; spikes 2 - 

 4, i' long or less, densely flow'ered, all but the upper one very shortly pedun- 

 cled, erect or spreading ; perigvnium globular-oblong, thin and very nearly 

 nerveless, about the length of the cuspidate scale. — Glades and meadows, 

 N Eng to Penn., AVisc. and L. Superior; rare westward. (Eu.) 



•*-•- ++ Perigijnium very stont-heaJced. 



64. C. Torrfeyi, Tuckerm. Stiff, 1 - U° high ; culm and leaves thinly 

 pubescent ; spikes all sessile, very short ; perigynium obovate, very strongly 



