MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 73 



Carex alpina Swartz ; Lilj. Sw. Fl. Ed. 2, 26 [Man. R. M. 388, 111. 



Fl. I : 306]. 



Mountain peaks at an altitude of 2500 m. and more. 



Montana: Yogo, 1886, 7?. ,5. Williams^ 6^4.; Little Belt Pass, 

 1896, Rydberg, 334.3. 



Yellowstone Park: Soda Butte Creek, 1885, Tweedy, 662. 



* Carex Mertensii Prescott; Bong. Vet. Sitcha, Mem. Acad. St. Pe- 



tersb. VI., 2: 168 [Bailey, Proc. Am. Acad. 22: 77]. 

 Resembling somewhat C. alpi'na, but with spikes almost twice as 

 large. At an altitude of 2500 m, 



Montana: Upper Marias Pass, 1883, Canbv, 34c}. 



Carex atrata L. Sp. PI. 976 [Man. R. M. 388 ; Bot. Cal. 2 : 239]. 



In mountain meadows at an altitude of 2500-3000 m. 



Montana: Indian Creek, July 22, 1897, Rydberg <& Bessey,3'/63 ; 

 Gallatin Co., 1886, Tzvecdy, 1042; Park Co., 1887, 13; Yogo, 

 1888,7?. S. Williams, 44g; Beaver Creek, 1883, Scribner, 320; 

 Yogo Baldy, 1896, Rydberg, 3416 ; Long Baldy, jjpj; Little Belt 

 Pass, 333 g. 



Yellowstone Park: 1885, Tzccedx, 633. 



The following specimens have been referred doubtfully to this 

 species by Professor Baile}'. 



Montana: Old Hollowtop, Pony, July 7, 1897, Rydbcrg & 

 Bessey, 3J64. 



Idaho : Mt. Chauvet, July 29, 1897, Rydberg d- Bessey, 376-/. 



Carex atratiformis Britton, Bull. Torr. Bot. Club, 22 : 222 [111. Fl. i : 

 306] ; Carex atrata ovata Boott, 111. 114 [Man. R. M. 388]. 

 Montana: Haystack Peak, 1887, Tzveedy, 12. 



* Carex trichocarpa laeviconica (Dewey) Hitchc. Trans. Acad. Sci. 



St. Louis 5: 524; Carex trichocarpa Dezceyi BaWey, Bot. Gaz. 

 10: 293 ; Carex laeviconica Dewey, Am. Journ. Sc. 24: 47. 

 Montana: Yellowstone River, Hayden (according to Bailey, 

 Proc. Am. Acad. 22: 75). 



Carex aristata R. Br. Frank. Journ. 751 [111. Fl. i : 302] ; Carex 



triciiocarpa aristata Bailey, Coult. Bot. Gaz. 10 : 294 [Man. R. 



M. 381]. 



Common in wet meadows and swamps up to an altitude of 2000 m. 



Montana: Dillon, 1895, Rydberg, 2086; Deer 'Lodge, 2120; 

 Helena, ^/^d; Bozeman, 1886, Tzveedx, 103Q; Great Falls, 1888, R. 



