X 



Carex. 



CYPERACEiE. 



375 



12. Carex rosea, Schk. 



Rose Sedge. 



Spikelets 4-6, remote, 9 - 12-flowered; bracts setaceous, the lower one exceeding the 

 spike ; fruit oblong, acuminate, rostrate, narrow at the base, radiate, rough on the distinct 

 margin, about half the length of the broadly ovate rather obtuse scale. — Schlc. Car. 2. p. 15. 

 t. Zzz.f. 179 ; Willd. sp. 4. p. 237 ; Pursh, jl. 1. p. 36 ; Muhl. gram. p. 233 ; Ell. sk. 2. 

 p. 531 ; Schwein. Torr. J. c. p. 302 ; Dew. Car. I. c. 10. p. 276 ; Beck, hot. p. 432 ; 

 Darlingt. jl. Cest. p. 28 ; Kunth, enum. 2. p. 386. 



Culms usually about a foot or 18 inches high, slender and often decumbent, triquetrous or 

 unequally 5-angled, naked except towards the base. Leaves very narrow, mostly about the 

 length of the culm. Spikelets sometimes only 3, but usually about 5 ; the lower ones 6-10 

 lines asunder ; the upper ones approximated, of a yellowish green color ; the perigynia radiate 

 when mature. Scales whitish, with a green midrib. Perigynia elliptical-ovate, plano-convex, 

 acute at the base, tapering to a point, which is slightly 2-cleft. Achenium elliptical-lenticular, 

 crowned with the short style, which is simple, and not articulated at the base. 



Moist woods and low grounds. Fl. May. Fr. June - July. This species is sometimes 

 dwarfish, with about 3 spikelets, which are 3 - 4-flowered ; in which state it is the C. rosea, 

 /3. radiata, of Dewey. 



13. Carex retroflexa, Muhl. Retrojiexed Sedge. 



Spikelets 3-6, somewhat approximated, 5 - 8-flowered, the lower ones bracteate ; peri- 

 gynia ovate, acuminate, 2-ioothed at the summit, smooth on the margin, spreading or reflexed, 

 about two-thirds the length of the ovate acute carinate scale. — Maid, in Willd. sp. 4. p. 235 ; 

 Schk. Car. t. Kkk. /. 140 ; Pursh, fl. 1. p. 35 ; Muhl. gram. p. 219 ; Ell. sk. 2. p. 529 ; 

 Dew. Car. I. c. 7. p. 271, and 10. p. 277 ; Schwein. <§• Torr. 1. c. p. 301 ; Beck, bot. p. 432 ; 

 Kunth, enum. 2. p. 286. C. rosea, var. retroflexa, Torr. Cyp. p. 383. 



Culm about a foot high, triangular, with the sides convex, slender, a little rough above. 

 Leaves narrowly linear, pale green. Spikelets mostly 4 ; the two lower ones a little distant 

 from the others, and commonly furnrshed with a setaceous bract, at first ovoid, but the flowers 

 at length spreading or reflexed, yellowish when mature, sterile at the summit. Scales of the 

 fertile flowers whitish, with a green keel. Perigynium smooth, with a short compressed point, 

 which is smooth on the sides. Achenium ovate-lenticular. Style somewhat articulated. 



Open woods and most meadows. Fl. May. Fr. June. Resembles the dwarf form of C. 

 rosea, but differs in its more approximate spikelets, shorter and smooth fruit. 



14. Carex sparganioides, Muhl. Bur-reed Sedge. 



Spikelets 6 - 10, ovoid ; the upper ones approximate ; lower ones somewhat distant, brac- 

 teate ; perigynia ovate, compressed, acute, diverging, rough on the narrowly winged margin, 



about twice as long as the ovate mucronate scale. — Muhl in Willd. sp. 4. p. 237 ; Schk. Car. 

 t. Lll. /. 142 ; Pursh, jl. 1. p. 36 ; Muhl. gram. p. 233 ; Dew. Car. I. c. 8. p. 265 ; Ell. 



