CYPKRACE^. (sedge FAMILY.) 605 



0. GRACf LLiMA X PUBESCENS, Bailey. Tall and 'erect ; leaves uarrowei 

 than in the last, usually slightly hairy ; spikes slender, erect or slightly spread- 

 ing, often staminate at top ; perigyuium exactly intermediate between the two 

 species, ovate, obscurely nerved, sparsely hairy, beaked, about the length 

 of the ovate ciliate rough-awned scale. (C. Sullivautii, Boutt.) — Columbus, 

 Ohio {Sullivant) ; Yonkers, X. Y. [E. C Hoice) ; Stanton, Del. (Commons). 

 •w- -M- Perigi/nium large, prominently inflated. 



56. C. formosa, Dewey. Slender, erect, 1 - 2-|° high ; leaves flat, mostly 

 rather broad, those of the culm very short ; spikes 3-5, scattered, oblong or 

 short-cylindrical (T long or less), compact, all flexuose or drooping; perigyu- 

 ium ovate, piincticulate, obscurely nerved, short-beaked with a sliglitly notched 

 orifice, all but the lowest one or two twice longer than the t)lunt or cuspidate 

 scale. — Woods and copses, Yt. to Mich. ; local. 



57. C. Davisii, Schwein. & Torr. Always taller , spikes heavier ; peri- 

 gyuium more inflated, strongly nerved and prominently toothed, no longer or 

 shorter than the conspicuously aw^ned and spreading scale. — Wet meadows, 

 W. Mass. to S. Minn., and southward ; rare east and northw^ard. 



* 4. — •<- 6. Grisece. 



58. C. grisea, Wahl. Stout, 1-2° high ; leaves broad (2 - 3") and slightly 

 glaucous ; bracts brt^ad and leaf -like, diverging, very much exceeding the culm ; 

 staminate spike small and sessile ; pistillate spikes 3-4, short (1' long or less), 

 the highest two usually contiguous to the staminate spike and sessile, the others 

 somewhat remote and peduncled, all erect, compact ; perigynium oblong, point- 

 less, marked with impressed nerves, turgid and cylindric, all but the lowest 

 longer than the narrow, cuspidate or blunt, nerved scale. — Moist grounds, 

 throughout, except along our northern borders; common. — Var. axgusti- 

 f6lia, Boott. Much more slender; leaves scarcely half so wide, the bracts, 

 especially, much narrower and shorter and more erect ; spikes slender ; peri- 

 gynium scarcely inflated, triangular-oblong, bearing a sharp beak-like point, 

 2-ranked ; scale nerveless, long-awued and spreading, N. J. to S. Ohio, and 

 southward ; common. — Var. glob6sa, Bailey. Low, 3 - 12' high, often spread- 

 ing; spikes few-flowered, often witli but 2 or 3 perigynia; perigynium short, 

 inflated, very blunt, nearly globose or obovate ; scale short, not prominently 

 cuspidate or the upper ones wholly blunt. Mo., Kan., and southward. 



Var. (?) rigida, Bailey. Rigid; leaves rather narrow, long and erect; 

 staminate spike prominently peduncled ; pistillate spikes scattered, all more 

 or less stalked, conspicuously 2-ranked ; perigynium triangular-oblong, hard, 

 longer than the cuspidate ascending scale. — Sellersville, Penn., and Del. 



59. C. glaucodda, Tuckerm. Lax or somewhat strict (6-18' high), 

 densely glaucous; leaves flat, variable in width, spikes as in n. 58; perigy- 

 nium firm, not inflated, prominently impressed-nerved, glaucous, longer than 

 the short-cuspidate or blunt thin and appressed scale. (C. flaccosperma, last 

 ed.) — Meadows and swamps, Mass. to S. 111., and southward ; local. 



* 5. Spirostachy^e. — •*-- 1. Gramdares 



60. C. granularis, Muhl. Erect or spreading, 8' - 2° high, somewhat 

 glaucous ; leaves flat, various ; bracts broad and long, much exceeding the 

 culm ; spikes 3 -4, scattered, all but the upper peduncled, erect or ascending 



