Herbarium Charles C. Plitt, 
THE LICHENS OF ALASKA 
BY CLARA E. CUMMINGS 
Our knowledge of the lichens of Alaska and their distribution 
has been materially increased by the collections of the Harriman 
Expedition. Over 800 specimens were collected, representing 
217 species, 75 of which were new to Alaska. At the same 
time that I received the Harriman lichens, various specimens 
from the United States National Herbarium were placed in my 
hands. These were collected by C. H. Townsend, in connec¬ 
tion with the work of the U. S. Fish Commission Steamer Al¬ 
batross at Attu Island; by Frederick Funston, in the upper 
Yukon Valley ; and by Walter H. Evans and J. Henry Turner. 
These collections add 5 species new to Alaska which are not 
represented in the Harriman collection, and 3 species not new 
to Alaska, but not otherwise represented in this enumeration. 
Later, the lichen collections made in Alaska in the summer of 
1899 by the botanical faculty of the University of California 
were sent to me for determination. These collections, chiefly 
the work of Professor Setchell, numbered 135 specimens, repre¬ 
senting 82 species, 4 of which were new to Alaska. The 
collection of Professor Setchell was also valuable for the new 
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