SEDGE FAMILY 135 



upper clustered, the lower widely separated, on long-exserted peduncles, the 

 lateral pistillate, 6-8 mm. wide, linear, not compound at base; scales dark reddish 

 brown or black, obtuse or acutish; perigynium body compressed-triangular, closely 

 enveloping achene, 3.75-5 mm. long, not inflated or hispidulous, contracted into 

 the short, sparingly ciliate-serrulate, shallowly bidentate beak. C. ablata Bailey. 

 C. owyheensis A. Nels. Mountain meadows and bogs: Mont. Wyo. 'Calif. 

 B.C. Mont. Subalp. Je-Au. 



105. C. fissuricola Mackenzie. Culms 5-8 dm. high; leaves mostly clus- 

 tered at the base, the blades 3-6 mm. wide, 7-14 cm. long; terminal spike sessile 

 or short-stalked, often slightly pistillate; lateral spikes 4-5, the upper contiguous 

 and sessile or short-peduncled, the lower separate and strongly peduncled; scales 

 ovate, acute to cuspidate, brown, with lighter midrib conspicuous to apex, 

 sparsely hairy when young; perigynium body narrowly ovate, much flattened, 

 loosely enveloping the achene, 5 mm. long, 2 mm. wide, sparsely hairy when 

 young, remotely ciliate-serrulate on the margins, contracted into a shallowly biden- 

 tate beak. C. luzulaefolia W. Boott, in part. Mountain meadows: (?Utah)- 

 Nev. Calif. Mont. Subalp. 



106. C. petricosa Dew. Stoloniferous; culms 1.5-2 dm. high, obtusely 

 triangular, smooth; leaf-blades 2 mm. wide; spikes 3-5, oblong, 10-15 mm. long, 

 closely flowered, the lower slender-peduncled; scales dark brown with hyaline 

 margins; perigynia several-nerved, hispidulous, 4.5-5 mm. long, the orifice of 

 the beak obliquely cut. Mountain summits: B.C. Alta. Alp. 



107. C. Franklinii Boott. Stoloniferous; culms 6-9 dm. high, obtusely 

 triangular, smooth; leaf -blades 2 mm. wide; spikes 5-8, oblong, 1.2 cm. long, 

 closely flowered, the lower slender-peduncled; scales brown with hyaline margins; 

 perigynia with slender nerves, 4.5-5 mm. long, rough on the margins, the beak 

 with obliquely cut orifice, becoming bidenticulate. Mountain summits: Canadian 

 Rocky Mts. (About Lat. 56.) Alp. 



37. PALLESCENTES Fries. Culms aphyllopodic, tufted, leafy towards the 

 base. Leaves pubescent. Terminal spike staminate, linear. Lateral spikes 

 pistillate, closely 10-30-flowered in several rows. Bracts leaf-like, sheathless or 

 nearly so. Perigynia green, rounded-triangular in cross-section, enveloping the 

 achene, many-nerved, glabrous, rounded at the base, beakless or short-beaked. 

 Achenes triangular, apiculate, the style thick, very short. Stigmas 3. 



108. C. abbreyiata Prescott. Culms 2.5-5 dm. high; leaflet-blades 1.5-3 mm. 

 wide; pistillate spikes 1-3, short-oblong, 6-16 mm. long, 6 mm. wide, sessile or 

 short-stalked, approximate; perigynia obovoid, 2.5-3 mm. long, strongly nerved, 

 depressed at the apex, tipped by a short slender entire beak. C. Torreyi Tuckerm. 

 Dry soil: Man. Minn. Colo. Sask. Plains Submont. Je-Jl. 



38. ANOMALAE Carey. Culms stout, leafy. Leaf-blades broad, flat, glab- 

 rous, not septate-nodulose. Terminal spike staminate, linear. Lateral spikes 

 pistillate, linear-cylindric, scattered, closely many-flowered in several rows. 

 Bracts leaf-like, sheathless. Perigynia ascending or in age spreading, obovoid, 

 small, 2.5-4 mm. long, olive-green, nerved, tapering at the base, triangular, 

 slightly inflated, abruptly beaked, the beak conic, shallowly bidentate. Achenes 

 triangular, subapiculate, the style short, thickish, Stigmas 3. 



109. C. amplifolia Boott. Stoloniferous; culms 5-10 dm. high, sharply 

 triangular; sheaths hispidulous; leaf-blades 8-18 mm. wide; pistillate spikes 

 short-peduncled or nearly sessile, 3.5-8 cm. long, 6-7 mm. wide; scales acute to 

 mucronate; perigynia 3 mm. long, nerveless except for the keels, glabrous. Wet 

 soil: B.C. Ida. Calif. Submont. Je-Au. 



39. LIMOSAE Tuckerm. Culms slender, leafy below. Leaf-blades narrow. 

 Terminal spike staminate, linear. Lateral spikes 1-4, pistillate, distant, oblong, 

 closely several-many-flowered in several ranks, drooping, on slender peduncles. 

 Bracts leaflet-like, essentially sheathless (in our species). Perigynia appressed, 

 coriaceous, ovoid, or elliptic, glaucous, papillose, beakless or nearly so. Achenes 

 triangular, closely enveloped, the style short, straight, exserted, its base not 

 enlarged. Stigmas 3. 



