SEDGE FAMILY 



307 



56. Carex piperi Mackenzie. 

 Piper's Sedge. Fig. 7i2. 



Carex pratcnsis fiirra Bailey in jNIacoun, Catal. Caiiad. PI. 5: 377. 1890. 

 Carex furva Piper, Contr. U. S. Nat. Herb. 11: 166. 1906; not Webb 1838. 

 Carex piperi Mackenzie; Piper & Beattie Flora Northwest Coast 75. 1915. 



Cespitose. the culms 3-8 dm. high, slightly roughened above. 

 Leaf-blades 2-3.5 mm. wide, flat, on lower third of culm, but not 

 bunched : head 2-4.5 cm. long, erect, the spikes 3-9, gynaecandrous. 

 aggregated or slightly separate, ovoid-oblong, 10-18 mm. long, 5-6 

 mm. wide, short tapering at base, slightly pointed at apex, many- 

 flowered : bracts little developed ; scales ovate, acutish, slightly 

 longer and wider than mature perigynia, brown with lighter center 

 and conspicuous hyaline margins ; perigynia ovate or lanceolate- 

 ovate, erect appressed, 4-5 mm. long, 1.5-1.75 mm. wide, thinly 

 plano-convex, narrowly winged to the base, strongly many nerved 

 on outer surface, nearly nerveless on inner surface, round tapering 

 at base, tapering into the shallowly bidentate beak 1 mm. long, the 

 apex hyaline; achenes lenticular, jointed with the slender style; 

 stigmas 2. 



Damp meadows, Canadian Zone; Alberta to Wyoming, west to Oregon and 

 British Columbia. Type locality: Vancouver Island. 



57. Carex tracyi Mackenzie. 

 Tracy's Sedge. 



Fig. 733. 



Carex tracyi Mackenzie, Erythea 8: 41. 



191 



Cespitose, the culms 2-8 dm. high, leafy nearly to middle, strict, 

 roughened on the angles above, exceeding the leaves. Leaf-blades 

 2^ mm. -wide, flat, light green; head stiff, narrow, 1.5-4 cm. long, 

 the spikes 4-7, gynaecandrous, aggregated or the lower a little 

 separate, ovoid, or short-oblong, 7-15 mm. long, 5-9 mm. wide, 

 obtuse at apex, the perigynia numerous, appressed-ascending ; lower 

 bracts little developed; scales ovate, acute, covering perigynia, 

 brownish red with lighter midvein and broad hyaline margins; 

 perigynia ovate, 4-4.5 mm. long, 2.25 mm. wide, plano-convex, 

 membranaceous, at length brownish tinged, winged to the roiinded 

 base, serrulate to middle, strongly many nerved dorsally, lightly 

 several nerved ventrally, abruptly beaked, the beak nearly length 

 of body, bidentate, tawny tipped; achenes lenticular; stigmas 2. 



Wet meadows and low swampy grounds, Canadian Zone; northern California 

 to British Columbia. Type locality: Bald Mountain, Humboldt County, Cali- 

 fornia. 



58. Carex phaeocephala Piper. 

 Motmtain Hare Sedge. Fig. 734. 



Carex leporiiia americana Olney, Proc. Am. Acad. 8: 407. 1872, name only; e.x. 



Bailey Proc. Am. Acad. 22: 152. 1886. 

 Carex phaeocephala Piper, Contr. U. S. Nat. Herb. 11: 172. 1906. 



In large stools from densely matted rootstocks, the culms stiff, 1-3 

 dm. high, exceeding leaves, more or less roughened beneath head. 

 Leaves bunched at the base, the blades more or less involute, 1.5-2 mm. 

 wide; spikes 2-5 (rarelv 7), gynaecandrous, aggregated, 6-12 mm. long, 

 5-8 mm. wide, forming an erect head, 12-25 mm. long; lowest bract 

 occasionallv developed; scales ovate, acute, covering perigynia, dark 

 brownish with strongly hyaline margins and lighter midvein; perigynia 

 ascending, oblong-ovate, plano-convex, 4.5 mm. long, 1.8 mm. wide, 

 membranaceous, at length brownish, round tapering at the base, 

 strongly nerved dorsally, obscurely nerved or nerveless ventrally, con- 

 tracted into a minutely bidentate. serrulate beak about 1 mm. long, 

 hyaline at the orifice ; achenes lenticular ; stigmas 2. 



High mountain summits, Arctic- Alpine Zone; Alberta to Colorado, west to 

 Alaska and British Columbia, and south to California, where confined to the higher 

 peaks of the Sierra Nevada. Type locality: Oregon. 



