204 FLORA. 



3-5, narrowly cylindric, 2-11 cm. long, 6-8 mm. in diameter, stalked, drooping; 

 perigynia obovoid, obtuse, about 2 mm. long and nearly as thick, nerveless, 

 abruptly tipped by the short entire beak; scales green, subulate, ciliate-scabrous, 

 spreading, 2-6 times as long as the perigynia; stigmas 2. In swamps and wet 

 woods, N. S. and Ont. to Fla. and Tex. June-Aug. A hybrid with C. torta is 

 described. 



Carex crinlta minor Boott. Culms slender, lower; leaves 3-5 mm. wide; pistillate 

 spikes 2-3 cm. long, 4 mm. thick, spreading or slightly drooping ; perigynia little more 

 than i mm. in diameter. Me. to S. N. Y. 



70. Carex gynandra Schwein. NODDING SEDGE. (I. F. f. 740.) Similar to 

 the preceding species. Leaves 6-12 mm. wide, glabrous or their sheaths often 

 finely pubescent; pistillate spikes 2-10 cm. long, narrowly cylindric; perigynia 

 oblong or elliptic, faintly iow-nerved or nerveless, compressed, slightly inflated, 

 3-4 mm. long, and about one-aalf as broad, tapering to an acute entire orifice; 

 scales subulate, rough, ascending, 2-4 times as long as the perigynia. In swamps, 

 Newf. to northern N. Y., Fla. and La. June-Aug. 



Carex gyndndra P6rten (Olney) Britton. Smaller, bearing the same relation to the 

 species that minor does to C. crini'a. Me. 



71. Care:: macrokolea Steud. SOUTHERN GLAUCOUS SEDGE., (I. F. f. 741.) 

 Glabrous, light ^reon, glaucous; culms stout, 0.5-1.1 m. tall. Leaves rough, 3-6 

 mm. wide, tapcri.'j to a very long narrow tip; lower bracts similar; staminate 

 spikes i or :;, chort- stalked; pistillate spikes 2-8, cylindric, 2-5 cm. long, erect, 

 sessile or the lower s; Iked; perigynia dark brown, 3 -angled, 3 mm. long, sev- 

 eral-nerved, r.bruptly contracted into a short sharp beak; scales oblong, rough- 

 awned, as 1 g as the perigynia or longer. In swamps, Mo. to Fla. and Tex. 

 June-Aug. 



7ia. Carex ve.Tucosa Muhl. WARTY SEDGE. Glabrous and usually 

 glaucous; cuims ?lend^r, I m. tall or less. Leaves smooth or very nearly so, 2-6 

 mm. wide, L..g-atte:m:ite; staminate spike I, stalked; pistillate spikes 1-6, cylin- 

 dric, 3-5 cm. I-/.;;, filiform-stalked and nodding, or the upper erect; perigynia 

 3-angled, somewhat swollen, abruptly sharp-beaked, 3-4 mm. long, about as long as 

 the ovate awn:d ccahs. In wet soil, S. E; Va. to Fla., Mo. and Miss. June-Aug. 



72. Care::: glailca Scop. GLAUCOUS SEDGE. (I. F. f. 742.) Glabrous, pale 

 green, glaucrus; culms 0.2-0.5 m - * a ^' Leaves smooth or nearly so, about 4 mm- 

 wide; lower bn,ct similar, narrower; staminate spikes mostly 2, stalked; pistillate 

 spikes 2 or 3, at length drooping, slender-stalked, linear-cylindric, 2-5 cm. long, 

 6 mm. thick; perigynia brown, ellipsoid, few-nerved, or nerveless, granulate or 

 papillose, nearly 2 mm. long, minutely beaked, the orifice entire; scales ovate or 

 lanceolate, brown with a green midvein, about as long as the perigynia; stigmas 

 2. In meadows, N. S. and Ont. Adventive from Europe. June-Aug. 



Perigynium densely pubescent. 



Pistillate spikes oblong-cylindric, 8-20 mm. long; perigynia oval or ovoid, few- 

 nerved. 73. C. virescens. 

 Pistillate spikes narrowly cylindric, 12-30 mm. long; perigynia oblong, strongly 



several-nerved. 74. C. costellata. 



Perigynium nearly glabrous, at least '.hen mature. 



Spikes 5-7 mm. thick ; perigynia imbricated, flattened ; top of the achene not bent. 



75. C. triceps. 



Spikes 4 mm. thick ; p rigynia not imbricated, swollen ; top of the achene bent, or 

 tipped with a bent styl . 76. C. Caroliniana. 



73. Carex virescens Muhl. DOWNY GREEN SEDGE. (I. F. f. 743.) Culms 

 slender, rough above. 1.5-5 dm. tall. Leaves light green, pubescent, especially on 

 the sheaths: spikes 2-5, short- stalked, erect or nearly so, 8-20 mm. long, about 

 3 mm. in diameter, the terminal one staminate below; perigynia 3-sided, rather 

 less than 2 mm. long, green, beakless, the orifice entire; scales oblong-ovate, cus- 

 pidate, slightly shorter than the perigynia. In dry woods and thickets, Me. and 

 Ont. to Mich., N. Car. and Mo. June-July. 



74. Carex costellata Britton. RIBBED SEDGE. (I. F. f. 744.) Similar to 

 the preceding, but taller and more spreading. Leaves pubescent; spikes 2-5, 



