376 CYPERACEiE. Cahex. 



sk. 2. p. 531 ; Bigel. ft. Bost. p. 336 ; Schwein. ^ Torr. I. c. p. 304 ; Beck, hot. p. 432 ; 

 Darlingt. fl. Cest. p. 29 ; Kunth, enum. 2. p. 381. 



. Culm 2 feet or more in height, triquetrous, rough on the angles above. Leaves pale green, 

 broadly linear. Spikelets sometimes as many as 12, but usually about 8 : several of the lowest 

 from half an inch to an inch apart, and sometimes compound. Bracts lanceolate, often longer 

 than the spikelets. Scales yellowish green. Perigynium membranaceous, much compressed, 

 plano-convex, spreading horizontally or a little reflexed, obscurely nerved, yellowish when 

 mature. Achenium broadly ovate-lenticular, crowned with the short continuous style. 

 Low swampy grounds : not rare. Fl. Early in May. Fr. June. 



15. Carex stipata, Muhl. Awl-fruited Sedge, 



Spikelets numerous, bracteate, crowded into an oblong compound spike ; bracts subulate, 

 rough, mostly shorter than the spikelets ; perigynia lanceolate, with a long tapering beak 

 which is serrulate on the margin, nerved, spreading, nearly twice as long as the ovate- 

 lanceolate mucronate scale, — Muhl. in Willd. sp. 4. p. 233 ; Schk. Car. t. Hhh. /. 1 32 ; 

 Pursh, fl. 1 . p. 35 ; Muhl. gram. p. 220 ; Dew. Car. I. c. 7. p. 271 ; Ell. sk. 2. p. 529 ; 

 Schwein. ^ Torr. I. c. p. 304 ; Beck, hot. p. 432 ; Darlingt. fl. Cest. p. 28 ; Kunth, enum. 

 2. p. 382. C. vulpinoidea, Torr. Cyp. p. 390 ; Boott in Hook. fl. Bor.-Am. 2. p. 212,"not 

 of Michx. 



Culm 1-3 feet high, rather thick and succulent, triquetrous, smooth except on the upper 

 part. Leaves 2-4 lines long, smooth, pale green. Spike about 2 inches long, of a straw 

 color, composed of 10 - 15 oblong spikelets which are somewhat distinct ; the lower ones with 

 subulate bracts at the base. Scales tapering to a sharp point. Perigynia plano-convex, slightly 

 stipitate with a broad truncate corky base, tapering to a long slender beak, 2-cleft at the point, 

 conspicuously striate. Achenium broadly ovate-lenticular. Style distinctly articulate at the 

 base. 



Swamps and low grounds : very common. Fl. April. Fr. June, 



16. Carex vulpinoidea, Michx. Fox Sedge. 



Spike oblong, decompound, more or less interrupted, bracteate ; spikelets glomerate, ovoid, 

 obtuse ; perigynia compressed, ovate, acuminate, bifid at the point, 3-nerved, sparingly hispid 

 on the margin of the beak, finally diverging, rather shorter than the ovate cuspidate scale. — 

 Michx. fl. 2. p. 69. C. multiflora, Muhl. in Willd. sp. 4. p. 243 ; Schk. Car. t. Ul.f. 144 ; 

 Pursh, fl. I. p. 36; Muhl. gram. p. 222 ; Dew. Car. I. c. 9. p. 60 ; Ell. sk. 2. p. 630 ; 

 Schwein. <^ Torr. I. c. p. 306 ; Beck, hot. p. 433 ; Darlingt. fl. Cest. p. 29 ; Kunth, enum. 

 2. ;;. 387. 



Culm 1 J - 2 feet high, acutely triangular and rough on the angles above, nearly terete 

 below, leafy. Spike 1^-2^ inches long, formed of numerous small spikelets, which are 

 crowded into 8-10 clusters. Bracts rather foliaceous, often elongated. Scales of the sterile 

 Howers lanceolate, with a short point ; of the fertile ovate, with a rough mucro. Perigynia 



