224 FLORA. 



entire beak ; scales ovate. In swamps and bogs, Newf. to Br. Col., Va.. Mich., 

 Colo, and Ore. Also in Europe and Asia. May July. 



178. Carex brunnescens (Pers.) Poir. BROWNISH SEDGE. (I. F. f. 848.) 

 Rather dark green, not glaucous ; culms stiff, rotighish above, 2-4.5 dm. tall. 

 Leaves 2 mm. wide or less, shorter than the culm ; spikes 4-8, subglobose or short- 

 oblong, few-flowered, rarely over 5 mm. long; perigynia brown, smaller than those 

 of the preceding, less than 2 mm. long, with a manifest beak about one-fourth as 

 long as the body ; scales ovate, membranous, brownish. In wet places mostly at 

 high altitudes, Lab. to Br. Col., N. Y. and N. E., on the southern Alleghenies, and 

 the Rocky Mts. Also in Europe. Summer. 



Carex brunnescens gracflipr Britton. Culms nearly filiform, weak, often spreading; 

 spikes 4-8-flowered ; perigynia spreading, longer-beaked. Range of type, mostly at 

 lower altitudes. 



179. Carex Norvegica Willd. NORWAY SEDGE. (I. F. f. 849.) Bright 

 green; culms slender but stiff, 1.54 dm. tall. Leaves 2 mm. wide or less, shorter 

 than the culm ; bracts very short or wanting ; spikes 3-6, brown, oblong or sub- 

 globose, 6-12 mm. long; perigynia about 2 mm. long, elliptic, blunt-edged, nar- 

 rowed at both ends, brownish, finely many-nerved, with a very short rough beak; 

 scales ovate or oval, brown, obtuse, rather shorter than the perigynia. Along salt 

 meadows, Me. to Anticosti. Reported from Minn. Also in Europe. Summer. 



1 80. Carex arcta Boott. NORTHERN CLUSTERED SEDGE. (I. F. f. 850.) 

 Rather light green, not glaucous ; culms slender, 3-7 dm. tall, rough above; leaves 

 flat, about 2 mm. wide. Spikes oblong, 6-8 mm. long, aggregated into a cluster 

 about 2.5 cm. long ; perigynia pale, ovate, many-nerved, mostly spreading, taper- 

 ing into a rough beak about one-half as long as the body ; scales pale brown, 

 usually acute, shorter than the perigynia. In swamps and wet woods, Me. and 

 N. B. to Manitoba., Minn, and Br. Col. June-July. 



181. Carex tenuiflora Wahl. SPARSE-FLOWERED SEDGE. (I. F. f. 851.) 

 Light green ; culms very slender, rough above, 2-5 dm. long. Leaves I mm. wide 

 or rather more, flat, usually much shorter than the culm ; spikes only 2-4, clustered, 

 subglobose, few-flowered, about 5 mm. in diameter ; perigynia pale, elliptic, 

 very obscurely few-nerved, narrowed at both ends, 2-2.5 mm - l n g beakless, 

 spreading ; scales nearly white, about equalling the perigynia. In bogs, N. B. to 

 Manitoba, south to Me., Vt. and Mich. Also in Europe. Summer. 



182. Carex Heleonastes Ehrh. HUDSON BAY SEDGE. (I. F. f. 852.) Culms 

 slender, very rough above, 1.5-4.5 dm. high. Leaves rigid, erect, becoming 

 involute, less than 2 mm. wide, shorter than the culm ; bracts very short or none ; 

 spikes 3-5, subglobose, brown, about 5 mm. in diameter, clustered ; perigynia 

 broadly ovate or ovate-elliptic, blunt-edged, faintly several-nerved, about 2 mm. 

 long, with a short sharp beak ; scales ovate, brown with broad hyaline margins, 

 about as long as the perigynia. Hudson Bay to Manitoba and the Canadian 

 Rocky Mts. Also in Europe. Summer. 



183. Carex lagopma Wahl. ARCTIC HARE'S-FOOT SEDGE. (I. F. f. 853.) 

 Culms rough, stiff, 1.5-4 dm. tall. Leaves flat, 2 mm. wide or less, shorter than 

 the culm ; bracts very short or wanting ; spikes 3-6, oblong, dark brown, narrowed 

 at the base, 6-8 mm. long ; perigynia elliptic or obovate, rather less than 2 mm. 

 long, firm, several-nerved, narrowed at the base, rather abruptly tipped by the 

 beak ; scales ovate, brown, hyaline-margined, acute, shorter than the perigynia. 

 Lab. and Greenland to Alaska ; south in the Rocky Mts. to Utah. Also in northern 

 Europe and Asia. Summer. 



184. Carex glareosa Wahl. WEAK CLUSTERED SEDGE. (I. F. f. 854.) 

 Closely resembles the preceding, but has weak spreading or reclining culms 

 0.54.5 dm. long. Leaves narrower, flat, about I mm. wide, spikes 2 or 3, 

 oblong or subglobose, several-flowered, 4-8 mm. long, brown, subtended by very 

 small scale-like bracts ; perigynia oblong-oval, strongly several-nerved, less than 

 2 mm. long, short-beaked ; scales ovate, rich brown, about as long as the perigynia. 

 Greenland and Hudson Bay to Quebec, west through arctic America to Alaska. 

 Also in northern Europe and Asia. Summer. 



Carex glareosa ursina (Dewey) Bailey. Lower ; densely tufted ; spikes smaller. 

 Arctic America. 



