2o8 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



Montana: Spanish Basin, 1896, Flodman, 547: Bridger Mts., 

 June 14, 1897, Rydbcrg & Bessey, 4^26 ; Emigrant Gulch, Aug. 

 23,^j^7,- West Boulder, 1887, Tzccedv, 11 : Lewis and Clarke Co., 

 Mrs.E.Muth; Bozeman Canon, 1892, W. 7^. 67/f/ry,- Granite, 1892, 

 F. D. Kelscy ; Deep Creek, 1883, Scribncr, 46; Ross' Hole, 1880, 

 Watson. 



Yellowstone Park: Soda Butte, 1885, Tzcccdy, ^77. 

 Rubus nivalis Dougl. ; Hook. Fl. Bor. Am. i : 181 [Man. R. M. 79]. 



According to Coulter, this should grow in the Bitterroot Mountains, 

 but I have seen no specimens from there. 

 Rubus strigosus Michx. FI. Bor. Am. i : 297 [Torr. & Gray, Fl. 



N. Am. I : 453 ; Man. R. M. 79; 111. Fl. 2 : 200]. 



Common on rocky ground, up to an altitude of 2500 m. 



Montana: South Fork of Judith River, 1896, Flodman, j^S : 

 Jack Creek, July 14, 1897, Rydhcrg & Bcssey, 4328 ; Electric Peak, 

 Aug. 20, 432c); Emigrant Gulch, Aug. 23, 4330; Spanish Basin, 

 June 28, 4331 ; Belt Mts., 1883, Scribncr, 4J ; Sand Coulee, 1886, 

 F. W. Anderson. 



Yellowstone Park : Blacktail Deer Creek, 1884, Tweedy, pj. 

 * Rubus leucodermis Dougl. ; Hook. Fl. Bor. Am. i : 178 [Torr. & 



Gray, Fl. N. Am. i : 454 ; Bot. Cal. i : 172] . 



It resembles Fuhus occidentalism but differs in the white bark of the 

 3'oung branches, the petals, which equal the sepals in length, and the 

 brownish black fruit with a white bloom. F. occidcntalis is ap- 

 parently not found in Montana, and R. leucodermis only in the western 

 portion of the state. 



Montana : Columbia Falls, 1892, R. S. Williams, 873. 

 Potentilla paradoxa Nutt. ; Torr. & Gray, Fl. N. Am. i : 437 [111. Fl. 



2 : 213 ; Rydb. Mon. 40*] ; Potentilla siifina ]Michx. Fl. Bor. Am. 



i: 304 [Man.R. M. 84]. 



Along streams in the eastern and northern parts of the state. 

 Potentilla rivalis Nutt. : Torr. & Gray, Fl. N. Am. i : 437 [Man. 



R. M. 83 ; Bot. Cal. i : 179; Rydb. Mon. 42]. 



Along rivers and in wet soil in the western portion of the state. 

 Potentilla leucocarpa Rydb.; Britton & Brown, 111. Fl. 2: 212 



[Rydb. Mon. 43] : Potentilla millegrana Engelm. ; Lehm. Ind 



Sem. Hort. Hamb. 1849: 11 ; not Dougl. ; P. rivalis millegrana 



Wats. Proc. Am. Acad. 8 : 553 [Man. R. M. 84 ; Bot. Cal. i : 178]. 



* Rydberg, Monograph of the North American Potentilleac in Mem. Dep. Bot. 

 Columbia Univ., Vol. 2. 



