596 CYPERACEiE. (SEDGE FAMILY.) 



cyUndricnl usually purplish beak, with a whitish hyaline entire orifice, longer than 



the ovate hlunt pnrpHsh scale. (C. Ilalseyana, Deic. ^ Ed. 1. C. striata, Torr. 



N. Y. FL, not of Michx.) — • Varies considerably ; in one form with the fertile 



spikes filiform, and the flowers alternate and very distant on the rhaehis. — 



Upland meadows, Rhode Island and Mass. to Pennsylvania. 



§ 1 1. Pcriijynia moderately inflated, conxpicuously many-nerved, smooth or puheseent, 



u-ilh a slrai(;IU beak terminating in 2 riyid more or less spreadir.q teelh : bracts 



leaf like, with very short sheathing bases, equalling or exceeding the cu'ni : 



stamlnate spikes 1 - 5. 



* Perigynia with a short and thick beak, and short teeth. — Lacijstres. 

 +- Perigynia hairy, .sometimes glahrute, turgid-ovate. 



120. C. striata, Michx. (not of Ed. 1). Sterile spikes .3, the uppermost 

 «lender-stalked ; fertile spikes 1-2, oblong, erect, remote, sessile or on short 

 stalks (or the lower rarely on a slender stalk) ; perigynia minutely hairy or 

 smoothish, or rarely smooth, rather thin, longer than the blunt or pointed scale, 

 the teeth usually scariously lobed at the base ; leaves and bracts long and nar- 

 row, rather rigid, involute, with slender or setaceous rough extremities. (C. 

 polymoipha, Ed. I.) — Wet places. New Jersey to Virginia, and southward. 



121. C. Houghtbnii, Torr. Sterile spikes mostly 2 ; fertile 2-3, oblong 

 or cylindraceous, thicker and less distant, olive-colored; perigynia hairy, thick- 

 walled, longer than the pointed or short-awn-tipped scale; the teeth at the 

 orifice narrow and entire; leaves and bracts flat, shorter and broader, and culm 

 lower (9' - 1.5') than in the foregoing. — Wisconsin (Lake La Biclie), Dr. 

 Ilouqhton ; shore of Lake Ontario. Prof. Whitney ; Mcdford above Bangor, 

 Maine, J. Blake ; and northwestward. 



■1- -t- Perigynia very smooth, very finely many-nerved. 

 122 C. riparia, Curtis. Sterile spikes 2-5, the uppernio>t stalked; fer- 

 tile spikes 2-3, oblong-cylindrical, erect, remote, nearly sessile, or the lowest 

 on a short stalk, large and thick (2' - 3' long. 4" - 6'' wide), olive-colored ; peri- 

 gynia lanceolate-conical, coriaceous, tipped with rather slender short teeth, 

 longer than the lance-ovate awned scale. (C. lacustris, Wilkl. and former cd.) 

 — Borders of streams, ponds, and swamps: common. — Very robust, 3° -5° 

 high : leaves 3" -5" wide, and sheaths nodose-reticulated. (Eu.) 



123. C. paludbsa, Good. More slender, with spikes smaller, leaves nar- 

 rower, perigynia ovate, flattened, and more strongly nerved than the preceding, 

 the orifice merely notched, and hardly exceeding the awned scale. — Border of 

 a salt marsh at Dorchester, Mass., W. Bootl. (Nat. from Eu. ?) 



* * Perigynia iv'ith an elongated tapering beak and with long and setaceous or awn- 

 like spreading or divergent teeth. — AristXt^. 



•*- Stamlnate spikes 2-5 {rarely w'lth some fertile flowers) : fertile spikes remote, 

 erect, rather loose, the uppermost almost sessile, without sheaths, the lowest often 

 on an exsorted sometimes spreading peduncle : perigynia ascending. 



124. C. arist^ta, R. Br. Fertile spikes 2 -4, cylindrical; perigynia ovate- 

 lanceolate, smooth, tapering into a slender beak ti])ped with very slender at 

 length diverging awn-like teeth, longer than the ovate-lanceolate awned and 

 above hispid-ciliate scale ; culm smooth ; sheaths and under surface of the leaves 



