^ 



BULLETIN 



OF THE 



TORREY BOTANICAL CLUB 



Vol. XVII.] 



New York, June 9, 1890. 



[No. 6 



Remarks on the Group Cinnamomeae of the North American Roses. 



VjV G. N. Bicsr. 



These remarks are based on an examination of the lar^e and 

 valuable collection of the Geological and Natural History Survey 

 of Canada, Prof John Macoun ; the collections of Lafayette Col- 

 lege, Prof T. C. Porter, and of the Philadelphia Academy of 

 Natural Sciences, Mr. J. II. Redficld ; contributions from Rev. 

 R. E. Schuh, Minnesota; Mr, Chas. V. Piper, Seattle, Washing- 



ton ; Dr. N. L. Britton. Dr. Sereno Watson, Mr. A. S. Hitchcock, 

 St. Louis, Mo., and Mr. O. A. P'^arwell, Mich., to all of whom 

 I tender my sincere acknowledgments. 



To M. Crepin, the distinguished rhodologist of Brussels, I 

 am likewise under many obligations, not only for rare specimens, 

 illustrative of the species of the Old World, by which I was en- 

 abled to compare allied forms of this country, but also for making 

 me acquainted with the results of his very extensive and valuable 

 observations. AVhile the views herein expressed are believed to 

 be largely in accord with those entertained by him, the author, 

 however, is solely responsible for them. 



The group Cinnamomere, enlarged so as to include the Gymno- 

 carpae and the Alpiucie, is confessedly a difficult one with which 

 to deal. Scarcely a species but occupies more or less debateable 

 ground. The geographical distributions are far from being ac- 

 * curately known. In this respect the best that can often be done 

 is an approximation. Much time and patient labor are yet re- 



