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 

 browTi 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 ciUate-serrulate, shaUowly bidentate beak. C. ablata Bailey. 

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

 B.C. Mofit. — 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 bro^\Ti with hyaline 

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

 the beak obhquely 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 obliquelv 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 l(>-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. abbreviata 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; perigj^nia 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-cyUndric, 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; perig\'nia 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, Unear. 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 eUiptic, glaucous, papillose, beakless or nearly so. Achenes 

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

 enlarged. Stigmas 3. 



