LICHENS 69 



varieties. That same year Dr. Charles Willard Hayes, of the U. 

 S. Geological Survey, collected a few lichens in Alaska, which 

 were also submitted to me. 1 The list comprises 20 species and 

 varieties. In the Report of the Fur Seal Investigation, 2 J. 

 M. Macoun publishes a list of 70 species ; he also publishes 

 a list of 9 species collected by William Palmer and determined 

 by W. J. Calkins. 3 In the summer of 1900 Mr. Arthur J. Col- 

 lier, in connection with the work of the U. S. Geological Sur- 

 vey, collected 10 species and varieties, which were submitted 

 to me 4 for determination. Kurtz, in his Chilcat Flora, 5 men- 

 tions two species, while Professor Farlow 6 records 4 from Point 

 Barrow. Professor Tuckerman 7 gives various Alaska stations 

 for different species, collected principally by Wright and Kel- 

 logg. Wainio, in his recently published monograph on Cladoniaf 

 gives additional localities for species of this genus. Summing 

 up, we find that before the publication of the present list 386 

 species and varieties had been enumerated. The present list 

 adds 76 species and varieties new to Alaska, making a total of 

 462 species and varieties. 



The lichen flora of Alaska is essentially like that of other 

 northern regions. Constant comparison has been made with 

 the works of Fries, 9 Lindsay, 10 and Arnold, 11 for the distribu- 



JCummings, Clara E., in An Expedition through the Yukon District, by 

 Charles Willard Hayes ; National Geographic Magazine, vol. iv, 160-162. 1892. 



Macoun, J. M., in Dr. Jordan's Report on the Fur Seals and Fur Seal 

 Islands of the North Pacific, Part 3. 1899. 



'Calkins, W. J., in Jordan's Report on the Fur Seals and Fur Seal Islands of 

 the North Pacific, Part 3. 1899. 



4 Cummings, Clara E., in Reconnaisances in the Cape Nome and Norton Bay 

 Regions, Alaska, in 1900, by Alfred H. Brooks, George B. Richardson, Arthur 

 J. Collier and Walter C. Mendenhall, United States Geological Survey, 167. 1901. 



5 Kurtz, Die Flora des Chilcatgebietes, Engler's Botanische Jahrbucher, vol. 

 xix, 431. 1895. 



6 Farlow, William G., in Ray's Report of the International Polar Expedition 

 to Point Barrow, Alaska, 192. 1885. 



7 Tuckerman, Synopsis North American Lichens, vol. I, 1882; vol. ix, 1888. 

 s Wainio, Monographia Cladoniarum, vol. I, 1887; vol. n, 1894. 



9 Fries, Th. M. Lichenes Arctoi. 1860. 



10 Lindsay, W. Lauder. Observations on the Lichens collected by Dr. Robert 

 Brown in West Greenland in 1867. Transactions of the Linnsean Society of 

 London, vol. xxvn, 305-368, tab. 48-52. 1871. 



"Arnold, Dr. F., in Labrador. 1896. 



Arnold, Dr. F. Lichenologische Fragmente, 35, Newfoundland, Separat- 

 Abdruck aus der ' Oester. botan. Zeitschrift,' Jahrg. 1896, Nr. 4. u. ff. 



