SEDGE FAMILY 137 



4.5 mm. wide; pistillate spikes 3-6, oblong-cylindric, 1-3 cm. long, 4-6 mm. wide, 

 somewhat attenuate at the base, closely many-flowered; pcrigj'nia flat, 3 mm. 

 long; achene short -stipitate. Momitains: Alta.— Wyo. — Ida. — Wash. Moni, 

 — Subalp, Jl-Au. 



119. C. Raynoldsii Dewey. Culms 2-4 dm. high, stout; rootstocks stout, 

 stoloniferous; leaf-blades 3-8 mm. wide; pistillate spikes 2 or 3, approximate or 

 the lowest separate, peduncled, erect, oblong, 1-2 cm. long, 7-8 mm. wide, closely 

 15-40-flowered; scales blackish, with light midvein, exceeded by the perig^nia; 

 perigynia oblong-oval, roimd in cross-section, 4.5 mm. long, 2 mm. wide, the 

 short beak bidentate. C. aboriginum M. E. Jones. Moimtain meadows and 

 bogs : Alta.— Colo.— Calif .—Wash. Moni.—Sahalp. Je-Au. 



120. C. Halleri Gunn. Culms 1.5-6 dm. high, slender; leaf-blades 1-3 mm. 

 wide; spikes 2-4, clustered, erect, sessile or short-peduncled, 4-10 mm. long, 

 closely 8-25-flowered ; scales black, shorter than the perigynia; perig>-nia nuuutely 



Alp. — Mont. Jl-Au. 



— Ont. — N.M. — Alaska; Eurasia. 



121. C. Nelsonii Mackenzie. Culms 2-4 dm. high, stiff, smooth, erect, 

 fibrillose at base; leaf-blades 3^ mm. wide; spikes 2 or 3, oblong or oboyoid, 

 10-12 mm. long, 5-8 mm. wide, the lateral densely 15-35-flowered; scales black, 

 the midvein obsolete; perigynia 4 mm. long, 1.5 mm. wide, roughened on edges 

 above, the conspicuous black beak sharply bidentate, Alountam meadows: 

 Wyo. — Colo. Subalp.—Alp. Jl-Au. 



122. C. albo-nigra Mackenzie. Culms 1.5-3 dm. high, stiff, roughened 

 above, sUghtly fibrillose at the base; leaf-blades 3 mm. wide; spikes usually 3, 

 the lateral narrowly oblong, 8-10 mm. long, 4 mm. wide, closely 8-15-flowered, 

 the terminal spike larger; scales with nearly obsolete midvein; pengjnia black- 

 ish, 3 mm. long, 2 mm. wide, minutely roughened on margms. Mountam mead- 

 ows: Mont. — Colo.— Ariz. — Utah. Subalp. — Alp. Jl-Au. 



123. C. nova Bailey. Culms 1.5-6 dm. high, stiff, little roughened, fibrillose 

 at thfi bnsp; Ipaf-blades 2.^5 mm. wide; spikes 2-4, broadly ovoid, 7-12 mni. 



&-10 mm. wide, closely flowered; scales with 



gynia 



gins. Mountain meadows: Mont.— N.M.— Utah— Ida. Mont.— Alp. Je-Au. 



124. C. atrosquama Mackenzie. Culms 3-4.5 dm. high, slender, often 

 nodding, Uttle roughened, slightly fibriUose at the base; leaf -blades 2 5-3.5 mm. 

 wade; spikes 3-4, approximate, the lower 1-2 slender-peduncled, oblong, b~12 

 mm. long, 5 mm. wide denselv lo-SO-flowered; scales black with obsolete mid- 

 vein; perigynia olive-green, 3.25 mm. long, 1.75 mm wde, round-tapering at the 

 base, abruptly minutely beaked. Mountain meadows: Alta.— -Mont.— laa. 

 B.C. Mont. Jl-S. 



125. C. bella Bailey. Culms 5^9 dm. high, slender, nodding, roughened 



3-6 mm. wide; spikes 3-4 



wide. 15-30 



pengynia 



126. C. atratiformis Britton. Cuhns 3-9 dm. high, slender, often noddmg, 

 roughened above, slightly fibriUose at the base; leaf-blades 3 mm wide; spik^ 

 3-47 oblong, 1-2.5 cm. long, 4-6 mm.' wide, closely lQ-30-flowered ; scales dark 

 reddish brown; perigynia 2.5-3 mm. long, 1.5 mm. wide, rounded at the base, 

 round-tapering at the apex. Along streams: Lab.— Me.— Alta.— lUKon. 

 Mont. — Boreal. Je-Au. 



127. C. chalciolepis Hohn. Culms 2-7 dm. high, slender, smooth, or nearly 

 so; leaf-blades 3-6 mm. wide, the uppermost bract-Uke, 2^ ^""-i ^^°Vin*^!!' 

 cence; spikes 2-4, contiguous, oblong to broadly ovoid, 1-2 cm. long, 5-lU mm 

 wide, closely flowered in many rows; scales verj- thm, copper-colored, much 

 narrower but longer than the perigVTiia, the midvem indistinct; PengJ-ma 3-4 

 mm long 2.5-3 mm. wide, with broadly oval or obovate body, rounded at ends, 



