40 KEPOBT OF THB STATE BOTANIST. 



lets are often 3"-V apart, the perigynia nerveless or obscurely 



nerved on the upper surface only, and widely divergent at matur- 



it}', agreeing with a form occurring in We^t Albany and Junius, 



having slightly wider leaves (^" wide or less) which cunnects 



the variety and the type. 



Low grounds along streams and shores. Long Island. May, 



June. 



21. Carex seorsa i/bjoe. 



Stems l°-2° high, slender, erect, smooth; leaves mostly a 

 little shorter than the culm, 1"-H" wide, rough-margined ; spike 

 l'-2i' long, erect, green ; spikelets 4-6, 6-20 flowered, globular 

 or oblong, 2"-2i" long, the upper two approximate, the others 

 scattered, the lowest ^'-1' distant from the next above, usually 

 subtended by a bristle form bract, rarel}"^ by a leafy one 1|' long; 

 the terminal spikelet pistillate at the apex, rarely wholly stami- 

 nate ; perigynia small, broa^dly ovate, nerved on both sides, 

 contracted into a short, smooth-margined, bifid beak, much 

 longer than the green and brown white-margined subacute scale. 



Swampy woods and groves. May, June. Lansingburgh, Rens- 

 selaer county. Ilowe. East Islip, Suffolk county, and near 

 Rome, Oneida county. Peck. 



This species grows in tufts and is separated from C. interior 

 by its taller, stouter culms, its longer spikes, more numerous and 

 more scattered spikelets, and by its smooth-beaked perigynia. 



Spikelets 2-15 or more, approximate or more or less aggregated, 

 ovate, obovoid, globular or clavate, sessile, erect or spreading, 

 green, fulvous or silvery-green, whitish or tawny ; perigynia 

 concavo-convex, ovate, obovate or lanceolate, mostly nerved, 

 prominently wing-margined, with a flat mostly rough-margined 

 bifid beak. 



Perigynia ovate-lanceolate, narrowly winged mirabilis. 



Perigv'iia linear-lanceolate or narrowly lanceolate . . 1 



Pericynia orbicular-ovate, broadly winged 2 



1 S])ikek't.s in a dense cluster partly concealed by long 



bracts eychnoccphala. 



1 Si>ikilets contiguous, bracts not concealing them ... 3 

 3 Spikelets densely aggregated, perigynia widely 



8])reading or reflexcd cristata, 



3 Spikelets contiguous or aggregated, perigynia not 



retlcxed 4 



