SUPPLEMENT TO THE FLORA OF MONTANA. 69 



Saxifraga Rydbergii, Small; Rydberg, Flora, 194. Mt. Brid- 

 ger, Bozeman, May 3, 1903, Faith Jackson; Mt. Hyalite, 10,000 ft., 

 Aug. i, 1902. 



Saxifraga . comosa, . Britton ; 5". stellaris comosa, Poir. With 

 6". Notkana, Moc. and apparently intergrading with that species. 

 Sperry Glacier, 6000 ft., Sept. i, 1903. 



ROSACES. 



Amelanchier Cusickii, Fernald. Leaves serrate from near the 

 base, glabrous when young; petals 2 cm. long. West of the Divide. 

 Missoula, May, 1897, M. J. Elrod, 40; Plains, June 6, 1902. 



Cercocarpus parvifolius, Nutt. ; Rydberg, Flora, 222. 

 Though common southward in Wyoming, there is no evidence that 

 it has ever been found in this state. 



Crataegus flabellata, Rydberg, and C. macracantha, Rydberg, Flora, 

 228. All Montana specimens referred to these species apt ear to be 

 C. Piperi, Britton ; neither of the two species mentioned appear to 

 cross the plains. 



Crataegus Piperi, Britton, Torreya, i :33- See C. flabellata above. 



Geum macrophyllum, Willd. Mountains, infrequent. Rumsey, 

 July 15, 1892, F. D. Kelsey; Spanish Basin, June 23, 1897, Rydberg 

 & Bessey, 4406; Bozeman, June 28, 1899; Upper Madison River., 

 July 1 6, 1899; Kalispell, Aug. 27, 1903; Swan Lake, June, 1902, M. J. 

 Elrod. 



y 



Ivesia alpicola, Rydberg; Howell, Fl. N. W. Atn. 1:182; H. 

 Cordoni alpicola, Rydberg, Mon., Pot. 152. 

 Mt. Bridger, 9000 ft., June 26, 1899. 



Potentilla filipes, Rydberg, Bull. Bot. Club, 28: 174. "Bridger 

 Mts., 1896, J. H. Flodman." 



Potentilla fissa, Nutt.; Rydberg, Mon. Pot. 198. Rather fre- 

 quent in the mountains on dry cliffs. 



Rocky Canyon, Bozeman, May 25, 1900, B. Jones; Spring Hill, 

 July 3, 1903, Amy M. Cooke ; Plains, June 6, 1902. 



Potentilla glandulosa monticola, (Rydberg), Mon. Pot. 199. 

 "F. D. Kelsey, 1891." 



Potentilla Nicollettii, Sheldon. Great Falls, July 10, 1900. 



