STANDLEY — FLORA OF GLACIER PARK. 303 



3 to 8 mm. wide; pistillate spikes 2 to 3, erect, oblong; scales blackish, with light 

 mid vein; perigynia 4.5 mm. long, oblong-oval, the short beak bidentate. 



40. Carex halleri Gunn. Edge of a pool in marsh along Swiftcurrent Creek below 

 Lake McDermott. Greenl. to Alaska, south to Ont. and N. Mex.; also in Eurasia.— 

 Culms 15 to 60 cm. high, slender; leaf blades 1 to 3 mm. wide; spikes 2 to 4, clustered, 

 erect, sessile or short-peduncled, closely 8 to 25-flowered; scales black; perigynia 

 minutely bidentate. 



41. Carex albo-nigra Mackenz. Mount Henry, Umbach. Mont, to Colo., Ariz., 

 and Utah.— Culms 15 to 30 cm. high; leaf blades 3 mm. wide; spikes usually 3, 

 closely 8 to 15-flowered; mid vein of scales nearly obsolete; perigynia blackish, 3 mm. 

 long, minutely roughened. 



42. Carex atrosquama Mackenz. Occasional on the moraine of Grinnell Glacier. 

 Alta. and B. C. to Mont, and Idaho.— Culms 30 to 45 cm. high, slender; leaf blades 

 25 to 35 mm. wide; spikes 3 or 4, oblong, densely 15 to 30-flowered; scales black, 

 with obsolete midvein; perigynia 3.25 mm. long, olive-green, abruptly and minutely 

 beaked. 



43. Carex chalciolepis Holm. In marsh at Grinnell Lake. Mont, to Nev., south 

 to Colo, and Ariz.— Culms 20 to 70 cm. high, slender; leaf blades 3 to 6 mm. wide; 

 spikes 2 to 4, the lateral ones ovoid, rather short-peduncled; scales very thin, copper- 

 brown, the midvein indistinct; perigynia 3 to 4 mm. long, obovate, shorter than the 

 scales, granular-roughened; achenes short-stipitate. 



44. Carex mertensii Prescott. Frequent at middle altitudes, in moist woods or 

 thickets; sometimes found on open slopes above timber line. A handsome species, 

 ranging from Alaska to Mont, and northern Calif .—Culms 30 to 100 cm. high, sharply 

 triangular, rough; leaf blades 4 to 7 mm. wide; spikes 1 to 4 cm. long; scales acute, 

 with light midvein; perigynia numerous, appressed, tapering at apex, minutely 

 beaked. 



45. Carex kelloggii W. Boott. Common at middle altitudes, in wet meadows or 

 marshes or along streams; also in subalpine meadows. Alaska to Calif., east to Mont, 

 and Colo.— Culms 30 to 70 cm. high, slender; staminate spike usually one; pistillate 

 spikes 3 to 5, sessile or nearly so, linear, 1.5 to 4 cm. long, 4 to 6 mm. wide; scales 

 with broad light-colored center; perigynia light green, 2.5 mm. long, strongly 

 stipitate. 



46. Carex substricta (Kukenth.) Mackenz. In willow thickets or low open places 

 about the east entrance; in boggy meadows along Swiftcurrent Creek below Lake 

 McDermott. Me. to Sask. and Mont., south to N. Y. and Nebr.— Culms 60 to 140 

 cm. high; staminate spikes 2 or 3; pistillate spikes 2 to 4, sessile or short-peduncled, 

 linear, 2 to 7 cm. long, 4 to 6 mm. wide; scales with broad light-colored center; 

 perigynia 3 mm. long, obovate, stipitate. 



47. Carex nebraskensis Dewey. About a dried-up pool near the east entrance. 

 S. Dak. to Kans., west to Calif, and B. C— Culms 25 to 100 cm. high; leaf blades 

 4 to 8 mm. wide, flat; staminate spikes 1 or 2; pistillate spikes 2 to 5, sessile or 

 short-peduncled; scales with light midvein; perigynia 3 to 3.5 mm. long. 



48. Carex lanuginosa Michx. In low open ground, or in low thickets, about 

 St. Mary and the east entrance. N. S. to B. C, south to Tenn., Mo., N. Mex., and 

 Calif.— Stoloniferous; culms 60 to 90 cm. high, rough above, reddened and filamentose 

 at base; staminate spikes 1 to 3; pistillate spikes 1 to 3, 1 to 5 cm. long; scales sharp- 

 pointed; perigynia ovoid, the beak strongly bidentate. 



49. Carex lasiocarpa Ehrh. Abundant in sphagnum bog at Fish Lake. Newf. to 

 B. C, south to N. J., Iowa, and Colo.; also in Eurasia.— Stoloniferous; culms 60 to 90 

 cm. liigh, smooth, strongly reddened and filamentose at base; staminate spikes 1 to 3; 

 pistillate' spikes 1 to 3, 1 to 5 cm. long; scales sharp-pointed; perigynia oval-ovoid, 

 the beak sharply bidentate. 



