PROCEEDINGS 



OF THE 



WASHINGTON ACADEMY OF SCIENCES 



Vol. II, pp. 375-286. October 10, 1900. 



PAPERS FROM THE HARRIMAN ALASKA 

 EXPEDITION. 



IV. 



THE TREE WILLOWS OF ALASKA. 



[Plate XV, figs, a-e.] 

 By Frederick V. Coville. 



The duty of making botanical collections on the Harriman 

 Expedition was officially entrusted to Dr. William Trelease 

 assisted by Professor De Alton Saunders, Professor William 

 H. Brewer assisted by Dr. Wesley R. Coe, and Mr. Frederick 

 V. Coville assisted by Mr. Thomas H. Kearney, Jr. Other 

 members of the expedition also collected plants, incidentally to 

 their specific work, as follows : Professor B. E. Fernow, Dr. 

 Charles Palache, Professor Trevor Kincaid, Mr. Leon J. Cole, 

 and Miss Mary Harriman. The Alaska collections were made 

 between June 4 and July 28, 1899, at about fifty localities along 

 the coast, from the southernmost point of the Territory to Bering 

 Strait. The frequent stops and the exceptional facilities afforded 

 for drying the material brought on board the steamer made it pos- 

 sible to secure an extensive series of specimens. The collections 

 are by far the largest made since the American occupancy of 

 Alaska in 1867, and probably exceed those of any one of the 

 Russian or English expeditions of the early part of the cen- 



Proc. Wash. Acad. Sci., October, 1900. (275) 



