148 CUMMINGS 



Fries, Th. M. 



1860 Lichenes Arctoi. 

 Rothrock, J. T. 



1867 Flora of Alaska. Smithsonian Report. 

 Lindsay, W. Lauder. 



1871 Observations on the Lichens collected by Dr. Robert Brown in West 

 Greenland in 1867. Transactions of the Linnaean Society of London, 

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



Hooper, Capt. C. L. 



1881 Cruise of the Corwin. 



Tuckerman, Edward. 



1882 Synopsis North American Lichens, Part i; Part n, 1888. 



Rothrock, J. T. 



1884 Proceedings of the United States National Museum, vol. vn, 1-9. 



Farlow, Dr. William G. 



1885 Ray, Report of the International Polar Expedition to Point Barrow, 

 Alaska, 192. 



Knowlton. 



1886 Proceedings of the National Museum, vol. ix. 



Wainio, Edv. 



1887 Monographia Cladoniarum, vol. i; vol. n, 1894. 



Turner, Lucien M. 



1888 Contributions to the Natural History of Alaska. 



Nylander, Dr. William. 



1888 Enumeratio Lichenum Freti Behringii, 1-91. Bull. Soc. Linn, de Nor- 

 mandie, vol. i, 1888. 



Cummings, Clara E. 



1892 Cooley, Miss Grace E., Plants collected in Alaska aud Nanaimo, B. C. t 



July and August, 1891. Bull. Torr. Club, vol. xix, 248, 249. 

 1892 An Expedition through the Yukon District, by Charles Willard Hayes. 



National Geographic Magazine, vol. iv, 160-162. 



Arnold, Dr. F. 

 1896 Labrador. 



1896 Lichenologische Fragmente, 35, Newfoundland. Separat-Abdruck aus 

 der "Oester. botan. Zeitschrift," Jahrg. XLVI. 



Kurtz, F. 



1895 Die Flora des Chilcatgebietes in Siidostlichen Alaska nach der Samm- 

 lungen der Gebrtider Krause. Engler's botanische Jahrbiicher, vol. 

 xix, 327-431. 



Macoun, J. M. 



1899 Jordan's Report on the Fur Seals and Fur Seal Islands of the North 



Pacific, pt. 3. 

 Calkins, W. J. 



1899 Jordan's Report on the Fur Seals and Fur Seal Islands of the North 

 Pacific, pt. 3. 



