SEDGE FAMILY 127 



lanceolate, 4.5-6.5 mm. long, narrowly wmged, round-tapermg at the base, 

 nearly nerveless on inner face, tapering to a short hyaline-tipped beak. C. 

 pratensis Drejer. Meadows and open woods: Greenl. — Me. — Colo. — Calif.^ 

 Alaska. Submont. — Mont. — Boreal. Je-Au. 



52. C. Piperi ^Mackenzie. Culms slender, 3-8 dm. high, roughened beneath 

 head; leaf-blades 2-3.5 mm. wide; spikes 3-9, elliptic, 10-18 mm. long, 5 6 mm. 

 wide; scales ovate, chestnut-brown with lighter center and narrow hyaline mar- 

 gins, shining; perig\Tiia 8-15, appressed, ovate-lanceolate, 4-5 mm. long, 1.75 

 mm. wide, narrowly winged, round-tapering at base, nearly nerveless on nuier 

 face, contracted into the hyaline-tipped beak, 1.5 mm. long. C.furvn (Bailey) 

 Howell. Damp meadows: Alta.— Wyo.— Ore.— B.C. Submont.— Mont. Je- 

 Au. 



53. C. microptera Mackenzie. Culms 3-10 dm. high, smooth or roughened 

 beneath the head; leaf -blades 2-6 mm. wide; spikes 5-20, densely aggregate mto 

 a subglobose to oblong-ovoid head, the spiles ovoid, 5-8 mm. long, 4-6 mm. 

 wide; scales ovate-lanceolate, sharp-pointed, brown with light mid vein; pen- 

 gynia ascending, 15-30, 3.5-4.5 mm. long, 1-1.5 mm. wide, lanceolate, nerved 

 ventrally, very narrowlv winged, tapering into a beak one-third the length of the 

 whole. JNlountains: Alta.—Wyo.— Ore.— Wash. Submont.— Mont. Je-Au. 



54. C. festivella Mackenzie. Culms rather stout, 2-7 dm. high, roughened 

 above; leaf-blades 2.5-4 mm. wide; spikes 3-8, densely a.ggregate, ovoid- 

 orbicular, 5-9 mm. long, 4-8 mm. wide; scales ovate, dark reddish brown with 

 narrow hyaline margins; perigynia numerous, appressed, 3.5-5 mm. long, 1.75- 

 2.75 mm wide, ovate, lightly nerved on the inner face, rounded at the base, 

 narrowed into a beak one-third the length of the body. C. feshva authors, as 

 to Rocky Mt. plant. Meadows and mountam sides: Alta.— N.M— Ariz.— Aev. 

 —B.C. Submont.— Mont. Je-Au. 



55. C. nubicola Mackenzie. Culms 12-35 cm. high, nearly smooth; leaf- 

 blades 2-3 mm. wide; spikes 4-7, densely aggregate, ovoid or subglobo-e, 

 5-9 mm. long, 4.5-8 mm. wide; scales ovate, acute, blackish with a light center 

 and nearly obsolete hyaline margins; perigynia 15-30, 4.D-5 mm. long, ^--./^ 

 mm. wide, ovate, rounded at the base, abruptly beaked, the beak half the length 

 of the body C. Haydeniana Olney. C. f estiva var. decumbens Holm. Mountain 

 sides: Alta.— Colo.— Nev.— Ore. Mont.— Alp. Jl-S. 



56. C. ebenea Rydb. Cukns 2-5 dm. high, little roughened; leaf-blades 

 2-3 mm. wide; spikes 5-10, densely aggregate, ovoid-oblong 7-12 mm^ long, 

 6 mm. wide; scales lance-ovate, acute, brownish black with nearly obsolete 

 hyaline margins; perigvnia appressed, numerous, 5-7 ram. long, 1.7.3 mm. wiae, 

 lanceolate, rSund-tapefing at the base, narrowed into a beak about 2 mm. long. 

 Mountain meadows: Wyo.—N.M.— Ariz.— Utah. Mont.— Alp. J^Au. 



57. C. pachystachya Cham. Culms rather slender, 3-8 dm. high, nearly 

 smooth; leaf-blades 2^ mm. wide; spikes 4-8, densely aggre^gate, ovoid or 

 subglobose, 5-8 mm. long, 4-6 mm! wide ;_ scales ovate, reddish, ^'i^h vf^y 

 narrow hyiline margins; perigynia 10-30, 3.0-4 mm. long, 1.0-2.25 i^«i- "J^^- 

 ovate, nerveless on the inner face, rounded at base, contracted into a beak half 

 the length of the body. Mountains: Alaska-Alta.-Colo.-Ore. Submont.- 

 Mont. My-Au. 



58. C. Preslii Steud. Cuhns 2.5-7.5 dm. high, rough beneath head; leaf- 



5-4 



5-8 mm. long, slightly narrower, rounded at apex, rounded at the base, the term- 

 inal one apfring^: siles ovate,' reddish brown with green "^^dvem and narrow 

 margins; perigvnia 10-25, ovate, thick, 3.5 mm. long, 2 mm. ^^e, oWrelj 

 nerved, rounded at base, abruptly beaked, the beak 1 mm. long ^ /^f "'«^^- 

 ^mciZis Olney. C . muUimoda Bailey . Mountams: B.C.— Mont.— Cahf. Mont. 



-Subalp. My-S. 



17. Canescentes Fries. Cespitose, but in somefpecies with slender stcjons^ 

 Culms triangular. Sheaths not cross-rugulose. Spikes I-IO, with few to many 

 pSJ?ninhe terminal gynaecandious, the lateral pistillate or gynaecandioua, 



