110 • SIXTEENTH REPORT. 



of Harvard University, who has verified the grasses and sedges, and all doubt- 

 ful determinations of my own. 



LITERATURE DEALING WITH THE FLORA OF ISLE ROYALE. 



1. Adams, C. C. An Ecological Survey in Northern Michigan. A report 

 from the University Museum, University of Michigan, published by the 

 State Board of Geol. Surv. as part of report for 1905. Lansing, Mich., 

 1906. Portions written by Dr. A. G. Ruthven deal with the ecology and 

 flora of Isle Royale. 



2. . An Ecological Survey of Isle Royale, Lake Superior. A 



report from the University of Michigan Museum, published by the State 

 Geol. and Biol. Surv., as a part of report of 1908. Lansing, Mich., 1909. 

 Sections by Dr. Adams, Dr. H. A. Gleason, and Mr. W. P. Holt deal with 

 the plant ecology and flora. 



3. Beal, W. J. Michigan Flora. A list of the fern and seed plants grow- 

 ing without cultivation. Published bv the State Board of Agriculture. 

 Lansing, Mich., 1904. 



4. Cooper, W. S. Reproduction bv lavering among Conifers. Bot. Gaz., 

 52: 369-379. 1911. 



5. . The Ecological Succession of Mosses, as illustrated 



upon Isle Royale. Plant World, 15: 197-213. 1912. 



6. . The Climax Forest of Isle Rovale, Lake Superior, and 



its Development. Bot. Gaz., 55: 1-44, 115-140, 189-235. 1913. 



7. ■. A List of Mosses Collected upon Isle Rovale, Lake 



Superior. The Bryologist, 16: 3-8. 1913. 



8. Foster, J. W., and Whitney, J. D. Report on the geology of the Lake 

 Superior Land District. Pt. II, the Iron Region. Sen. Doc, Spec. Sess., 

 32d Cong., 3. 1851. Contains a list of plants of the Upper Peninsula by. 

 W. D. Whitney, including some from Isle Royale. 



9. Gleason, H. A. See Adams 2. 



10. Holt, W. P. See Adams 2. 



11. Ruthven, A G. See Adams 1. 



12. Wheeler, W. A. Notes on Some, Plants of Isle Rovale. Minn. Bot. 

 Stud., 2:619-620. 1901. ''' '■€, ** 



LIST OF SPECIES. 



Polypodiaceae. Fern Family. 



1. Polypodium vulgare L. Polypody. Climax forest, cliffs and boul- 

 ders. 



2. Phegopteris polypodioides Fee. Beech Fern. Bog forest, common. 



3. Phegopteris Dryopteris (L.) Fee. Oak Fern. Bog forest, abundant; 

 climax forest, frequent. 



*4. Adiantum pedatum L. Maidenhair Fern. "Sparingly distributed in 

 mesophytic forest." Holt. 



5. Pteris aquilina L. Brake. Burn forest and early stages of Burn Suc- 

 cession. 



6. Cryptogramma achrostichoides R. Br. Rock Brake. Heath mat and 

 rock shore crevices. 



*7. Asplenium Trichomanes L. Maidenhair Spleenwort. "On thinl}*^ soil- 

 covered rocks, rare. Rock cliff along Siskowit cabin trail." Holt. Al.so 

 T. C. Porter, in Beal. 



