GENUS 18. 



SEDGE FAMILY. 



68. Carex macloviana D'Urv. Falkland Island 

 Sedge. Fig. 935. 



C. macloviana D'Urv. Mem. Soc. Linn. Paris 4 : 599. 1826. 



Strongly caespitose, the culms stout, stiff, 6'-is' high, 

 slightly roughened on the angles above. Leaves flat, 

 \\"-z" wide, usually much shorter than the culm; 

 head J' long, short-oblong or ovoid, of 3-8 densely 

 clustered ovoid-oblong or subglobose gynaecandrous 

 spikes 2"-4" long, 2" -3" wide, each with 10-25 closely 

 appressed perigynia ; bracts small or not developed ; 

 perigynia ovate, brownish, much flattened and thin, 

 but distended over achene, about 2" long and i" wide, 

 few-nerved on outer, nerveless on inner surface or 

 nearly so, round-tapering at base, abruptly narrowed 

 into a serrulate obscurely bidentate beak about one- 

 third length of body; scales ovate, obtuse to acute, 

 slightly shorter and narrower than perigynia, brown- 

 ish-black with strongly developed white hyaline some- 

 times incurved margins; stigmas 2. 



Labrador and Greenland. Also in Lapland and in south- 

 ern South America. July-August. Closely related to Carex 

 f estiva Dewey of the Rocky Mountain region. 



69. Carex festucacea Schkuhr. Fescue Sedge. Fig. 936. 



Carex festucacea Schkuhr; Willd. Sp. PI. 4: 242. 1805. 

 Carex straminea var. brevior Dewey, Am. Journ. Sci. n : 



158. 1826. 

 C. straminea var. festucacea Tuck. En. Meth. 18. 1843. 



Culms slender or rather stout, smooth or roughened 

 beneath head, stiff, strictly erect, i-4 tall. Leaves 

 rather stiff, erect, i"-2" wide, shorter than the culm ; 

 sheaths with a conspicuous pale band and membranous 

 auricle ; spikes 3-10, green-brown or light-brown, oblong 

 or nearly globular, clustered at the summit but not at 

 all confluent, or the lower separate, 2"~4i" in diameter, 

 3i"~7i" long, rounded or clavate at base ; bracts short 

 or wanting; perigynia varying from orbicular to ovate, 

 broadly wing-margined, ii"-if" in diameter, 2 r '-2\" 

 long, thickish, somewhat spreading or ascending, 

 strongly nerved on outer face, faintly on inner face, 

 the roughish beak about one-third the length of the 

 body ; scales lanceolate or ovate-lanceolate, acute or 

 obtusish, rather shorter and narrower than the peri- 

 gynia; stigmas 2. 



In dry or moist soil, New Brunswick to British Columbia, south to Florida and Arkansas. 

 May-July. 



70. Carex Bicknellii Britton. Bicknell's Sedge. Fig. 937. 



Carex straminea var. Crau<ei Boott, 111. 121. pi. 388. 



1862. Not C. Craicei Dewey, 1846. 

 Carex Bicknellii Britton ; Brit. & Br. 111. Fl. i : 360. 1896. 



Culms loosely tufted, 2-4 high, erect or the top 

 inclined, roughish above, much longer than the 

 leaves. Leaves 4'-i2' long, \\"-2\" wide towards 

 base ; bracts usually very short ; spikes 3-7, ovoid, 

 subglobose, or somewhat obovoid, 4"~9" long, 3"-6" 

 broad, approximate, or the lower separated, brown- 

 ish or greenish or straw-colored, staminate at the 

 base, the head stiff, erect; perigynia spreading-ascend- 

 ing, very broadly ovate or suborbicular, thin, very 

 prominently (about 16) nerved on both faces, 2f"-3? ' 

 long, nearly \\"-2." wide, the membranous wing very 

 broad, the rough 2-toothed beak one- fourth to one- 

 half as long as the body; scales lance-ovate, obtuse 

 or acute, straw-colored or brownish with hyaline 

 margins, shorter and much narrower than perigynia; 

 stigmas 2. 



In dry soil, Maine to Manitoba, south to New Jersey, 

 Arkansas and Nebraska. June-July. 



