126 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



Polygonum viviparum L. Sp. PI. 360 [Man. R. M. 321 ; 111. Fl. 



i: 555; Bot. Cal. 2: 15; Small, Mon. 30.*] 



In alpine bogs, at an altitude of 2500-3000 m. 



Montana: Yogo, 1888, R. S. Williams, 624: East Boulder, 

 1887, Tivecdy, 108: Stillwater, 1897, P. Koch, J2 : Old Hollow- 

 top, Pony Mts., July 7, 1897, Rydbcrg ti- Besscy, JJJJ. 



Yellowstone Park : 1884, Tzvccdv, 2/: Falls of the Yellow- 

 stone, 187 1, Hay den. 

 Polygonum bistortoides Pursh, Fl. Am. Sept. 271 : Polygonum 



Bistorta ohlongifolimn Meisn. in DC. Prod. 14 : 126 [Man. R. M. 



320; Bot. Cal. 2 : 15 ; Small, Mon. 28]. 



The European P. Bistoi'ta has oblong leaves, truncate or subcor- 

 date at the base. P. bistortoides grows in mountain meadows, at 

 an altitude of 1800-2500 m. 



Montana: Little Belt Mts., 1896, Flodman, 3S4: Yogo, 1888, 

 P. S. Williams, jg; GoW^ixn Co., Mrs. Alde)-son : Haystack Peak, 

 1887, Tweedy, loy ; Fort Ellis, 1883, Scribner, 2j6: Bridger Mts., 

 June 11-I4, Rydberg d: Besscy, jjj6. 



Yellowstone Park: Mammoth Hot Springs, 1893, P. H. 

 Burglehaus ; 1888, Dr. C/ias. II. Hall; 1883, Miss Mary Comf- 

 ton; 1885, Tzi'eedy, jjj. 

 Polygonum bistortoides linearifolium (Xutt.) Small, Bull. Torr. Bot. 



Club, 19: 352 [Small, Mon. 29]: Polyoonnm Bistorta lineari- 

 folium Wats. Bot. King's Exp. 317 [Man. R. M. 321]. 



It grows in wet places on the higher mountains, at an altitude of 

 3000-3500 m. 



Montana: Lima, 1895, Pydberg: Spanish Peaks, 1896, Pyd- 

 berg; Indian Creek, July 22, 1897, Pydberg d: Besscy, jjjj. 



Yellowstone Park: 1883, Miss Marx Compton : Hot Sulphur 

 Spring, 187 1, Hay den. 

 Polygonum amphibium L. Sp. PL 361 [Man. R. M. 320 : 111. Fl. i : 



555; Bot. Cal. 2 : 13 ; Small, Mon. 40]. 



In lakes and ponds up to an altitude of 2500 m. 



Montana: Sun River Canon, 1887,7?. 6". Williams, 62j : Silver 

 Bow Co., Airs. Dolman; Bozeman, 1886, P. Koch, 1202 in part; 

 Fridley, 1887, Tzvcedy, log: Horned Creek, 1883, Scribner, 2jy; 

 Cliff Lake, July 27, 1897, Pydberg d- Besscy, jjjS. 



Yellowstone Park: Yellowstone Lake, 1885, Tzueedy, y/S. 



* Small, Monograph of the X. Am. Species of Polygonum, in Mem Dep. Bot. Co- 

 lumbia Coll., \'o!. I. 



