138 KEW YORK STATE MUSEUM 



lets are often S"-i" apart, the perigynia nerveless or obscurely 

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

 ity, agreeing with a form occurring in West Albany and Junius, 

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

 the variety and the type. 



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



June. 



2 1 . Carex seorsa Ilcnoe . 



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

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

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

 or oblong, 2"-y|^" long, the upper two approximate, the others 

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

 subtended by a bristle form bract, rarely by a leafy one li;' long 'y. 

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

 nate ; perigynia small, broadly 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. Howe. East Islip, Suffolk county, and near 

 Rome, Oneida count}'. 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* 



Perigynia linear-lanceolate or narrowly lanceolate . . 1 



Perigynia orbicular-ovate, broadly winged 2 



1 Spikelets in a dense cluster partly concealed by long 



bracts sycl nocephala. 



1 Spikelets contiguous, bracts not concealing them ... 3 

 3 Spikelets densely a^rgregated, perigynia widely 



spreading or reflexed crietata. 



3 Spikelets contiguous or aggregated, perigynia not 



reflexed 4 



