Rydberg: Notes on Rosaceae 485 



hybrid, and it is more likely a distinct species. The following 

 specimens belong to it: 



Kansas: Manhattan, 1892, Norton; Riley County, 1895, 

 Norton 137; Olathe, 1892, Hitchcock; Fort Riley, 1892, Gayle 522; 

 Emporia, 1891, E. Smith; Cowley County, 1899, Mark White 54; 

 Lawrence, W. C. Stevens. 



Nebraska: Lincoln, 1887, Webber; Nehawka, Sweezey; Sar- 

 gent Bluffs, 1853 or 1854, Hayden; Franklin, 1893, Laybourne; 

 Middle Loupe, 1893, Rydberg 1608; Glenwood, 1888, T. A. 

 Williams. 



South Dakota: Black Hills, Fort Meade, 1887, Forwood 15. 



Oklahoma: Waugh 175. 



Texas: San Marcos, 1898, Stanfield; Crab Apple, Jermey 471; 

 Industry, 1893, Wurzlow. 



Minnesota: Fort Snelling, 1890, Mearns 346, 347. 



Arkansas: Whippe Expedition, Bigelow. 



Geum canadense Jacq. This has usually been known under the 

 name Geum album J. F. Gmel. The latter was arbitrarily substi- 

 tuted by Gmelin, probably because he thought that it was more 

 appropriate. I say arbitrarily and without good cause, for he 

 simply based his species on Jacquin's plate and original description 

 of G. canadense. 



Geum album (i. e. G. canadense) has been reported from the 

 valley of Mexico. As that station was so far remote from the 

 otherwise known range of Geum canadense, the nearest station 

 being in Texas, the writer thought that the specimens from Mexico 

 belonged to some other species and that it was merely a case of 

 misidentifi cation. He found, however, in the National Her- 

 barium three sheets collected by Schiede, no. 580, at San Angel, 

 not far from Mexico City, and these specimens can not be dis- 

 tinguished from specimens from the United States. It was also 

 collected at Chinantla, 1841, Liebmann 1743. 



Geum Meyerianum Rydb. C. A. Meyer* gave a very good 

 description of this species, but mistook it for G. agrimonioides 

 Pursh, which is not a Geum at all, but Drymocallis agrimonioides 

 (Pursh) Rydb., until lately usually known as Potentilla arguta. It 

 was, therefore, necessary to give another name to Geum agrimoni- 



* Ind. Sem. Petrop. n: Supl. 29, 1846. 



