CYPERACE.E. (SEDGE FAMILY.) 603 



vSMfxHir, Porter. Tall, slender, olive-green, the leaves very long, very nearly 

 smooth ; spikes small, globular or short-cylindrical {V long or less), the lowest 

 often somewhat remote, all more inclined to be peduncled ; perigyuium globu- 

 lar and turgid, brown, squarrose, giving the spilie a characteristic ])lunip aj)- 

 pearance. — Fields and woodlands, southern N. J., K. I'cnn., and suutliward ; 

 also in Ark. ; freciuent. 



* 4. — H- 2. Sijlvdticce. 



48. C. longirostris, Turr. Very slender but erect, H- 3° high, growing 

 in stools ; leaves narrow, Hat, loose ; spikes 3-5, 1-2' long, loosely flowered, 

 dropping; perigyuium thin, slightly inflated, green, nearly nerveless, spread- 

 ing, the beak longer than the body, about the length of the aw^ned scale. — 

 Shady banks from N. Eng. to Neb., and northward; frequent. — Var. MisoR, 

 Boott. Smaller and slenderer; spikes 9" long or less, very narrow and very 

 loosely or even alternately few-flowered ; perigyuium smaller. Neb. and 

 westward. 



* 4. — -t- 3. Fle'xUes. 



49. C. cast^nea, Wahl. Slender but erect, 1 - 2^° high ; leaves broad 

 and flat, hairy, much shorter than the rough culm; spikes 2-4, approximate, 

 widely spreading or drooping on filiform stalks, 1' long or less, rather dense, 

 tawny ; perigyuium broad-lanceolate, gradually narrowed into a beak jf as long 

 as the body, thin, with a nerve on each side, longer than the light brown or 

 whitish acute thin scale. (C. flexiiis. Budge.) — Banks, Conn, to Minn. ; local. 



C. arctXta X castAnea, Bailey. Leaves mostly narrower, less hairy or 

 smooth ; spikes very slender and loosely flowered (scarcely over 1" wide), erect 

 or drooping, chestnut color ; perigyuium thin, long-ovate, shorter-beaked, 

 lightly nerved, mostly surpassing the pointed whitish scale. (C. Knieskeruii, 

 DeAceij.) — Oneida Co., N. Y. ; Keweenaw Co., Mich. (Farwell) ; N. Minn. 



50. C. capillaris, L. Very slender but erect, 2-12' high ; culm smooth, 

 longer than the narrow flat or at length involute leaves; spikes 2-4, either 

 scattered or approximate, all more or less long-peduncled and drooping, borne 

 in the axils of conspicuous sheathing bracts, very small (3 - 12-flowered) ; peri- 

 gyuium thin, very small, oblong-ovoid, the beak hyaline-lipped, longer than 

 the very obtuse white scale. — Alpine summits of the White Mts. ; Cortland, 

 N. Y., Alcona Co., Mich., and Point de Tour, L. Huron. (Eu.) 



* 4. — -1-4. De'biles. 



+* Perigi/nium thin, rareli/ with more than tivo prominent nerves. 



51. C. arct^ta, Boott. Slender, erect, 1 - 2° high ; radical leaves much 

 shorter tlian the culm and very broad (2i-5"), flat; bracts broad and short, 

 long-sheathing ; spikes 3-5, all widely spreading or drooping on filiform stalks, 

 1-3' long and exceedingly slender; perigyuium short (2" long or less), ab- 

 ruptly and conspicuously stipitate and abruptly contracted into a beak, 3-cor- 

 nered, prominently nerved, green, mostly sjireading, scarcely longer than the 

 very sharp or cuspidate scale. — Woods and copses, N. Eng. to Penn. and Minn. ; 

 common. 



Var. Fax6ni, Bailey. Spikes shorter and usually short-pcduncled, erect 

 or nearly so, much more densely flowered, part of them commonly contiguous 

 at the top of the culm, rendering the shorter staminate spike inconspicuous; 



