522 CrPERA^EjE. (SF.nr.K FAMILY.) 



lines. (C. undid .ita, Kanzc.} Mc;ulo\vs, Now England to Pcnn. and north- 

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



66. . COnoid ea, Selik. Stamina^ spike on a loin; nl .-//.:; fertile 2-3, 

 oblong, closely Jk ivered, the lower distant; perigynia oblonj-i-onind, irltli itnjircsaed 

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

 the sharply pointed or awned scale; bracts not exceeding th< culm. (C. tetanica, 

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



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

 and the lowest distant; perigynia ovoid-oblong, rather longer than the ovate awned 

 scale. (C. laxiflora, Schk., not of Lam.) Var. MCTICA has longer cyiindrieal 

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

 (C. laxiflora? var. rnutica, Torr. $ Gr. C. flaccosperma, 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 exserted 

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

 culm : pcrigynia oblong, with a short and abrupt notched point (obsolete ill 

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



White. GRACfLLIM^E. 



+- Fertile spikes nodding or pendulous. 



68. C. Davisii, Schw. & Torr. Fertile spikes oblong-cylindrical, rather 

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

 uously awned scale. (C. aristata, Dew., not of R. Br. C. Torreyana, Dew.} 

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

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



69. C. fOI'lllOSa, Dew. Fertile spikes oblong, short., all commonly with 2- 

 3 b'arren 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. gradllima, Schw. Fertile spikes linear, slender ; pcrigynia obtuse 

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

 lis, Schw. <$* 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, beakless, and sessile perigynium. 



t- - Fertile spikes nearly erect, all but the lowest short-pedunded or nearly sessik. 



71. C. aestiViftliS, M. A. Curtis. Spikes slender, loosely flowered; peri- 

 gynia acutish at both ends, twice the length of the ovate ol>tuse or mncronate scale; 

 achcnium somewhat stipitate ; sheaths of the lower leaves pubescent : otherwise 

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

 Massachusetts (/A//vy). Pokono Mountain, Penn. (Darlington <^ Totcnsmd), and 

 along the Allcghanies to Virginia and southward. 



3. Pt-figi/niit iritfiont a beak, hairy (in No. 73 becoming smooth at maturity), 

 slightly injl.i'.cd, bluntly 3-angled, obtuse, conspicuously nerved, with a miuute 



