522 erpERACE^E. (SEDGE FAMILY.) 



lines. (C. undulita, Kunze.) Meadows, New England to l\nn. and north 

 ward. Plant 8' - 18' high, with slightly pubescent culm and leaves. (Eu.) 



66. C. COIlOzdca, Schk. Stammate spike on a long stalk ; fertile 2-3, 

 oblong, dvsely jlcwered, the lower distant; perigynia oblong-conical, with impressed 

 nerves, slightly oblique at the summit, rather longer (or sometimes shorter) than 

 the sharply pointed or a\vned scale; bracts not exceeding the culm. (C. tetanica. 

 Schw. 4* Torr., not of Schk.) Moist meadows; rather common. 



67. C grlsesi, Wahl. Fertile spikes 3 - 5, oblong, loosely flowered, remote, 

 and the lowest distant; pf'igynia ovoid-oblong, rather longer than the ovate awned 

 scale. (C. laxiflora, Scftk., not of Lam.) Var. MUTICA has longer cylindrical 

 spikes, short-awned scales, and the leaves and bracts pale green and glaucous. 

 (C. laxiflora? var. mutica, Torr. $ Gr. C. Baccoapwma, Dew.) Moist woods 

 and meadows; common, especially southward. The variety, with spikes I'-l^ 

 long, occurs in New Jersey (Knieskern) and in the South. 



* * * Uppermost spike more or less pistillate at the apex (rarely all staminate' ; 

 pistillate spikes 3-5, oblong or cylindrical, loosely flowered, distant, on exserisd 

 filiform and mostly drooping stalks: bracts equalling or often exceeding the 

 culm : perigynia oblong, with a short and abrupt notched point (obsolete in 

 No. 70), green and membranaccous at maturity : pistillate scales tawny or 

 white. GiiAcf LLI M^E. 



-- Fertile spikes nodding or pendulous. 



68. C. Davisii, Schw. & Torr. Fertile spikes oblong-cylindrical, rat/ier 

 thick ; perigynia somewhat contracted at each end, scarcely longer than the conspio- 

 uously owned scale. (C. aristata, Dew., not of R. Dr. C. Torreyana, Dtw.) 

 Wet meadows, Massachusetts to Wisconsin, and southward. Larger than the 

 next (l^-2 high), and with stouter and longer spikes. 



69. C. fOB'lHOSa, Dew. Fertile spikes oblong, short, all commonly with 2- 

 3 barren flowers or empty scales at the base ; perigynia somewhat contracted at 

 each end, nearly twice as long as the pointed or cuspidate scale. Wet meadows ; 

 Massachusetts to W. New York. 



70. C. graCillima, Schw. Fertile. spik<s liiidir, slender; perigynia obtuse 

 and slightly oblique at the orifice, longer than the oblong awned scale. (C. digita- 

 lis, Schic. ,\- Torr., not of Willd.) Wet meadows, New England to Kentucky, 

 Wisconsin, and northward. When this species occurs with the uppermost 

 spike altogether staminate, it resembles C. arctata; but is readily distinguished 

 by the obtuse, beak less, and sessile pcrigynium. 



- *- Ftrtilt- sj tikes nearly erect, all but the lowest short-peduncled or nearly sessile. 



71. C. rcstivaliS, M. A. Curtis. Spikes sk-niu-r, loosely flowered; peri- 

 Kynia acutish at both ends, twice the length of the ot-ate obtuse or mucronate scale, 

 achcnium somewhat stipit:it<; sheaths of the lower leaves pubescent: otherwise 

 nearly as the last, but a smaller plant (1-U high). Saddle Mountain, W. 

 Massachusetts (l)r,- ; i), Pokono Mountain, Pcnn. (/tarlimjioii cj- Townsend), and 

 along the Allcghanics to Virginia and southward. 



i 3. Perigynia without a bnik, hairy (in No. 7.3 becoming smooth at maturity), 

 injlitcd, bluntly 3-angled, obtuse, conspicuously nerved, with a miuute 



