378 CYPERACE.E. Carex. 



19. Carex alopecoidea, Tuckerm. Fox-tail Sedge. 



Spike compound, oblong ; spikelets 8-10, ovoid, aggregated, staminate above ; perigynium 

 ovale, plano-convex, nearly nerveless, about as long as the ovate mucronate scale ; the beak 

 of medium length, acuminate, serrulate-scabrous on the margin, bifid at the tip. — Tuckerm. 

 enum. Car. p. 18, and Sill. jour. 45. p. 39. C. cephalophora, var. maxima, Dew. Car. I. c. 

 43. p. 92. 



Culm tall (2-4 feet high), triquetrous, rough on the angles, leafy below. Spike about an 

 inch long, loose, yellowish green. Sligmas 2. Fruit diverging, slightly winged. 



Woods, Penn-Yan (Dr. Sartwell). Resembles C. cephalophora, but differs in the peri- 

 gynium. It is also allied to C. vulpina of Europe, and C. stipala ; but in those species the 

 perigynium is scarcely margined. 



20. Carex Sartwellii, Dew. SartioelVs Sedge. 



Spike compound; spikelets 12-25, ovoid and ovoid -oblong, sessile, somewhat closely 

 bracteale, fertile below , the upper ones often almost wholly staminate, and the lower ones, or 

 somelimes all of them, chiefly fertile ; perigynium ovate-lanceolate, convexo-concave, some- 

 what 2-toothed at the apex, about the length of the ovate acute scale. — Dew. Car. I. c. 43. 

 p. 91. 



Culm 1 1 - 2 feet high, rather rigid, erect, leafy below, rough on the angles. Leaves flat, 

 pale green, shorter than the culm. Spike about 2 inches long, lobed, somewhat compressed. 

 Spikelets very closely approximated : one third or one half of the upper ones commonly sterile ; 

 the lower ones with a few staminate flowers above, or eniircly fertile. Scales light brown. 

 Perigynium with ihe margin serrulate-scabrous. Achenium obovate-lenticular, slightly two- 

 toothed, and often split down in front half its length. 



Junius, Seneca county (Dr. Sartwell). As my acute friend Mr. Tuckerman remarks, this 

 species is scarcely distinct from the European C. disticha. 



21. Carex teretiuscula, Good. Lesser-panicled Sedge. 



Spike decompound, oblong, consisting of ovate crowded spikelets which are finally brownish; 

 bracts short ; perigynia ovate, slipitate, acuminate, unequally biconvex, 3 - 5-nerved external- 

 ly, the flat beak serrulate on the margin, longer than the ovale acute scales. — Gooden. in Linn, 

 trans. 2. p. 163. t. 19./. 3 ; Schk. Car. t. D.f. 19, and T.f. 69 ; Dew. Car. I. c. 7. p. 225; 

 Schivein. <§• Torr. I c. p. 308 ; Beck, hot. p. 433 ; Kunth, enum. 2. p. 390. C. paniculata, 

 /3. teretiuscula, Wald. in act. Holm. 1803. p. 143 ; Torr. Cijp. p. 390. 



Culm 1^-2 feet or more high, triquetrous and striate, rigid, rough on the angles. Leaves 

 very narrow, channelled, triquetrous towards the apex. Spike 1 - 1^ inch long and one third 

 of an inch in diameter, often somewhat decompound. Scales brownish, with a pale green keel. 

 Perigynium chestnut- brown, shining, nerved on the convex surface but not on the back, 

 thickened and corky at the base, with a short abrupt stipe. Achenium orbicular- obovate, 

 lenticular. 



Swamps : common. Fl. May. Fr. June. A native also of Europe. 



