222 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



In swamps up to an altitude of 2500 m. 



Montana: Spanish Basin, June 28, 1897, Rydberg & Bessey, 

 4413; \'$><^6, Flodman^ 610; Bozeman, 1886, Tweedy, iiSy (per- 

 haps a hydrid with G. Oregonense); Deer Lodge, Miss E. Ware; 

 Neihart, 1886, R. S. Williams, ^7; Jefferson City, 1883, Scrihner, 

 4.0 b; Ross' Hole, 1880, WafsoJi. 



Sieversia ciliata (Pursh) G. Don. Gard. Diet. 2 : 528 ; Gcuiii ciliatum 



Pursh, Fl. Am. Sept. i : 352 [Torr. & Gray, Fl. N. Am. i : 425 ; 



111. Fl. 2: 219] ; Genm Irifioruin Pursh, Fl. Am. Sept. 2: 736 



[Torr. & Gray, Fl. N. Am. i : 423 ; Man. R. M. 82 ; Bot. Cal. 



i: 176]. 



Common throughout the mountain regions, growing most com- 

 monly on hillsides, at an altitude of 1000-1300 m. 



Montana: Deer Lodge, 1888, F. W. Trafhagen; Little Belt 

 Mts., iS()6, Flodtnan, 6og; Bridger Mts., June 11, 1897, Rydberg 

 & Bessey, 4415; Jack Creek, July 14, 4414; Butte, 1896, J. F. 

 Kenif; Helena, 1892, Kelsey ; Bozeman Pass, 1883, Scrib)ier, 40a. 



Yellowstone Park: 1886, Francis Hall; 1883, Mis? Mary 

 Comfton ; 1885, Tzveedy, 4J4; Miss Frances Hobson. 



Sieversia turbinata (Rydb.) Greene, Pittonia, 4: 50; Genm turbina- 



tttm Rydberg, Bull. Torr. Bot. Club, 24: 91 ; Genm Ross ii Tow. 



& Gray, Fl. N. Am. i : 424, in part [Man. R. M. 82]. 



Neither S. Rossii nor /itDiiilis are found in the Rocky Mountains. 

 The former is an Arctic plant and the latter has only been collected 

 on the island of Unalaska. S. tiirbinatum differs in the turbinate 

 hypanthium (so-called calyx) and the much smaller flowers. It is an 

 alpine or subalpine plant, growing among rocks on the mountain 

 sides, at an altitude of 2500-3500 m. In the subalpine regions it 

 often becomes 2-3-flowered and fully 2 dm. high; on the highest 

 mountain top it is only a few cm. high and always one-flowered. 



Montana: Spanish Peaks, 1896, Flodman, 608; Old Hollowtop, 

 Pony Mts., July 9, Rydberg & Bessey, 4417 ; Indian Creek, July 

 24, 4416; Mt. Blackmore, 1886, Tweedy, iig4; Hell Roaring 

 Creek, Park Co., 1887, Tweedy, g; McDonald's Peak, 1883, Canby, 

 gg; Belt Mts., 1883, Scribner, 40; Odell's, 1880, Watson, no; Belt 

 Mts., 1883, Canby, 40. 



Cercocarpus parvifolius Nutt. ; Hook. & Arn. Bot. Beechey's Voy. 

 337 [Man. R. M. 81; 111. Fl. 2: 223; Bot. Cal. i: 175]. 



