MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 79 



Carex Pennsylvanica Lam. Enc. 3: 388 [Man. R. M. 374; 111. Fl. 

 I : 333 ; Bot. Cal. 2: 246]. 



On prairies up to an altitude of a little over 1000 m. 

 Montana: Box Elder Creek, 1886, R. S. Williams, 4.62. 



Carex filifolia Nutt. Gen. 2 : 204 [Man. R. M. 374 ; 111. Fl. i : 339 ; 



Bot. Cal. 2 : 229]. 



On dry plains up to an altitude of 2000 m. 



Montana: Great Falls, 1886, R. S. Williams, 470: Shields 

 River, 1883, Scribncr, jo8 (gravelly soil) ; Cottonwood Creek, 1896, 

 Rydberg, 3312 ; Spanish Basin, 306/. 



* Carex deflexa Hornem. Plantel. Ed. 3, i : 938 [111. Fl. i : 334]. 



In open places up to an altitude of 2000 m. 

 Montana: Armington, 1892, R. S. JJ7lliams, yg6. 



* Carex deflexa Farwellii Britton, 111. Fl. i: 334; Carex deflexa 



media Bailey, Mem. Torr. Bot. Club, i : 43 ; not C. media R. Br. 

 On mountains up to an altitude of 2500 m. 



Montana: Long Baldy, Little Belt Mts., 1896, Flodman, 28S ; 

 Rydberg, 33^2; Little Belt Mts., 3377. 



Carex deflexa Rossii Bailey, Mem. Torr. Bot. Club, i : 43 ; Carex 



7t'^.s-5// Boott ; Hook. Fl. Bor. Am. 2:222; C. JVovae-angliac Rossii 



Bailey, Bot. Gaz. 10: 207 [Man. R. M. 375]. 



Montana: Park Co., 1887, Tzceedy, 41 : Highwood Mts., 1888, 

 R. S. Williams, yg3. 



Yellowstone Park: ]Mirror Lake, 18S5, Tzceedy, 63 j. 



Carex durifolia Bailey, Bull. Torr. Bot. Club, 10 : 428 



[111. Fl. i: 338]: Carex Backii Boott : Hook. Fl. Am. 2: 210 



[Man. R. M. 376] ; not C. Bachiana Dewey. 



In woods up to an altitude of 2200 m. 



Montana : Sand Coulee, 1891, R. S. Williams, jg4; Trail Creek, 

 .1887; Tzueedy. 



Carex obtusata Lilj. Vet. Akad. Nya. Handl. 1793: 69 [Man. R. 



M. 377]. 



On high mountains and table lands up to an altitude of 3000 m. 



Montana: Bridger Mts., June 11, 1897, Rydberg d- Bessey, 

 3773; Belt Canon, 1887, 7?. S. Williams, 641 : Little Belt Mts., 

 1883, Scribner, 30^: Long Baldy, Little Belt Mts., 1896, Rydberg, 

 3383; Flodman, 2^2. 



