KEPOBT OF THB 8TATB BOTANIST. 89 



scabro pubescent, densely hairy on the sheaths, light green; 

 staminate spikes 1-2, cylindricsl, ^'-1^' long, on a slender 

 peduncle l'-2' in length, the lowest ^' long and sessile; pistillate 

 spikes 1-3, distant or remote, the highest sesdle, the lowest on 

 an included stalk ^'-1' in length, erect, subdensely flowered, 

 |'-1|-' long; bracts leafy, the lowest sheathing, surpassing the 

 culm ; perigynia ovate-oblong or lanceolate, prominently nerved, 

 turgid, downy-pubescent, 3" long, tapering into a long slender 

 bifurcate beak, longer than the ovate rough-awned scale. 



Introduced. Rare or local. Cayuga county. June, July. 



It is separated from the next by its light green foliage and 

 downy sheaths, and bj- its fewer, softer fertile spikes. 



108. Carex trichocarpa Muhl. 



Stems 2°-3° high, rigidly erect, acutely angled, smooth or his- 

 pid on the angles above ; leaves stitf, rough, 2"-3" wide, longer 

 than the culm ; staminate spikes 2-5, linear or subclavate, |-'-iy 

 long, the terminal short-stalked, rarely with a few fertile flowers 

 at the base or apex, the lowest, which is frequently the longest, 

 with a bristleform bract, each tapering to an acute apex ; pistil- 

 late spikes 2-4, distant, short-peduncled, or the highest subsessile, 

 erect, cylindrical, closely flowered above, somewhat loosely at the 

 base, l'-2|-' long or more ; bracts leafy, sheathless, longer than 

 the culm ; perigynia oblong-ovate, prominently nerved, hispidly 

 pubescent, gradually tapering into a long bifurcate beak, the 

 teeth sharp and spreading; scale ovate-lanceolate, thin, brown 

 with scarious margins, shorter than the perigynium; achenium 

 obovate, apiculate, smooth. 



Marshes and wet places. Common. June, July. 



Prominently marked by its 2-5 narrow acute sessile sterile 

 spikes, and its rough-hairy, deeply cleft perigynia. 



Var. imberbis Gray. A reduced form with rough sheaths, 

 smooth perigynia and mostly longer scales. 



109. Carex aristata Ji. Br. 



Stems 1°-2|^' high, erect, stout, acutely angled, smooth below 



the spikes ; leaves longer than the culm, l|-"-3" wide, smooth, 



rough on the margins, stiS', yellowish green ; staminate spikes 



1-4, club-shaped, the uppermost on a stalk ^-'-1' long ; pistillate 



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