204 FLORA. 



3-5, narrowly cylindric, 2-1 1 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 crlnlta 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 1 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 few-nerved or nerveless, compressed, slightly inflated, 

 3-4 mm. long, and about one-half 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. Tune-Aug. 



Carex gyn&ndra P6rteri (Olney) Britton. Smaller, bearing the same relation to the 

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



71. Carex macrokolea Steud. Southern Glaucous Sedge. (I. F. f. 741.) 

 Glabrous, light ^recn, glaucous; culms stout, 0.5-1. 1 m. tall. Leaves rough, 3-6 

 mm. wide, tapering to a very long narrow tip; lower bracts similar; staminate 

 spikes 1 or c, chort-stalked; pistillate spikes 2-8, cylindric, 2-5 cm. long, erect, 

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

 eral-nerved, abruptly contracted into a short sharp beak; scales oblong, rough - 

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

 June-Aug. 



71a. Carex verrucosa Muhl. Warty Sedge. Glabrous and usually 

 glaucous; culms slender, I m. tall or less. Leaves smooth or very nearly so, 2-6 

 mm. wide, long-attenuate; staminate spike 1, stalked; pistillate spikes 1-6, cylin- 

 dric, 3-5 cm. long, 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 awncd scabs. 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, glaucous; culms 0.2-0.5 m - ta ^- Leaves smooth or nearly so, about 4 mm- 

 wide; lower bract 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, 12-36 mm. long; perigynia oblong, strongly 

 several-nerved. 74. C. cost el lata. 

 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 ; perigynia not imbricated, swollen ; top of the achene bent, or 

 tipped with a bent Stylo. 76. C. Carolinian a. 



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. RlBBKD SEDGE. (L F. f. 744.) Similar to 

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



