Reprinted from The Bryologist, Vol. XXV, May 1.122. 



LIBRARY 



NEW YOi<K 



BOTANICAL 



(jARDfcN 



THE BRYOPHYTES OF MICHIGAN 

 WITH PARTICULAR REFERENCE TO THE DOUGLAS LAKE REGION* 



George E. Nichols 



Our knowledge cf the bryophyte flora of Michigan seems to be limited to 

 five published lists, of which three are based on collections from Isle Royale, 

 the extreme northern outpost of the state. Of these three, the first in order, by 

 Holt 1 , records 38 mosses; the second, by Cooper", raises the number of mosses to 

 104; the third, by Conklin 3 , records 36 liverworts. Of the two remaining papers 

 one by Kauffman 4 , based in large measure on specimens collected in southern 

 Michigan, records a total of 131 liverworts and mosses; the other by Praeger 6 

 records 10 species of Sphagnum from the vicinity of Douglas Lake. 



The present paper, like Praeger 's, is the outcome of investigations carried 

 on at the University of Michigan Biological Station, situated on Douglas Lake, 

 and is based primarily on collections made by the writer during the summers of 

 1920 and 1921. By far that larger number of records are from the immediate 

 vicinity of Douglas and Burt Lakes, in Cheboygan County, but collections were 

 also made in the vicinity of Pellston, Cecil Bay, and Big Stone Bay, in Emmet 

 County, and on Mackinac Island, in Mackinac County. Cheboygan and Emmet 

 Counties are the northernmost counties in the southern peninsula of Michigan, 

 while Mackinac Island lies in the straits of Mackinac, between Lakes Michigan 

 and Huron. A few scattered records are included from the southern shores of 

 the northern peninsula of Michigan (Prentis Bay and Scotty Bay), based on col- 

 lections by Dr. J. H. Ehlers, who is responsible also for a number of records from 

 other localities. 



* Contribution from the Osborn Botanical Laboratory. 

 1 Hclt, W. P. Notes on the vegetation of Isle Royale, Michigan. In "An ecological survey 

 of Isle Royale, Lake Superior", prepared under the direction of C. C. Adams. Lansing. 1908 

 (1909) ■ 



2 Cooper, W. S. A list of mosses collected upon Isle Royale, Lake Superior. Bryologist 16: 

 1-8. 1913. 



3 Conklin, G. H. A list of Hepaticae collected upon Isle Royale, Lake Superior. Bryologist 

 17: 46-48, 52-55- 1014. 



4 Kauffman, C. H. A preliminary list of the bryophytes of Michigan. Mich. Acad. Sci. 

 Rep. 17: 217-223. 1915. 



6 Praeger, W. E. A collection of sphagnum from the Douglas Lake region, Cheboygan 

 County, Michigan. Mich. Acad. Sci. Rep. 21 : 237, 238. 1919. 



The March number of The Bryologist was published May 22, 1922. 



