378 CYPERACE.E. Carex. 



19. Carex aloi'ecoidea, 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. Stigmas 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, Deio. SartioelVs Sedge. 



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

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

 sometimes 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^-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 entirely fertile. Scales light brown. 

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

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



Junius, Seneca county {Dr. Sartioell). As my acute friend Mr. Tuckerman remarks, this 

 species is scarcely distinct from the European C. dislicha. 



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



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

 bracts short ; perigynia ovate, stipitate, 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./. 19, and T.f. 69 ; Dew. Car. I. c. 7. p. 225; 

 Schwein. <^- Terr. I. c. p. 308 ; Beck, hot. p. 433 ; Kunth, enum. 2. p. 390. C. paniculata, 

 /3. teretiuscula, Wahl. in act. Holm. 1803. p. 143 ; Torr. Cyp. p. 390. 



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

 very narrow, channelled, triquetrous towards the apex. Spike 1 - li 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. 



