MICHIGAN ACADEMY OP SCIENCE. 



47 



LITERATURE CTTED. 



1. Cockerell, T. D. A. Alpine flora, Colorado. Am. Xat. 4O: 861-873' 

 1906. 



2. Fernald, M. L. Vascular plants of Mt. Katahdin. Rhodora 3: 166- 

 177. 1901. 



3. Fernald, M 

 193. 1907. 



4. Gray, Asa 



L. Soil preferences of alpine plants. Rhodora 9: 149- 



Am. 



Statistics of the flora of Northern United States. 

 J. Sci. 11, 22: 204-232: 23: 62-84; 369-403. 1856. 



5. Gray, Asa. Am. J. Sci. 11, 25: 144. 1862. 



6. Gray, Asa. Am. J. Sci. Ill, 4'- 282-298. 1872. 



7. Harvey, L. H. An ecological excursion to Mt. Ktaadn — Lists new 

 forms. Rhodora 5: 41-52. 1903. 



8. Harvey, L. H. A study of the physiographic ecology of Mt. Ktaadn, 

 Maine. The University of Maine Studies. No. 5. 1-50. 1903. 



9. Hooker, J. D. Outlines of the distribution of arctic plants. Tr. Linn. 

 Soc. London, B. 20: 251-348. 1861. 



10. Robinson and Fernald. Gray's new manual of Botany. 1908. 



11. Williams, E. F. Comparison of the floras of Mt. Washington and 

 Mt. Ktaadn. Rhodora 3: 163. 1901. 



Western State Normal School. Kalamazoo, Mich. 



