Vol.1] Setchell-Gardner. — Algce of North ivestern America. 175 



gathered at Yakntat Bay, Alaska in 1899; a collection from 

 Sitka, Alaska, forwarded l\y Miss Ida M. Rodgers of the Alaska 

 Historical and Ethnological Society in 1889; a few species, col- 

 lected at Esqnimalt in 1898, by W. A. Setchell at an nnfavor- 

 able tide; many species collected by Miss Josephine E. Tilden at 

 varions points in the region of Puget Sound and distributed in 

 her American Alga^ (1894-1902) ; extensive collections at Whid- 

 bey Island, Orcas Island, San Juan Island, Seattle, Wash., and 

 other localities in Puget Sound, by N. L. Gardner from 1897 to 

 1901; a collection from Port Renfrew, B. C, by Miss Eloise 

 Butler and Miss Jessie E. Policy, determined by Frank S. Col- 

 lins of Maiden, Mass., and determinations and some of the spec- 

 imens communicated to us; a small collection by G. W. Lichten- 

 thaler, made at Port Angeles, Clallam County, Wash., and on 

 Vancouver Island, B. C, determined by Mr. Collins and the 

 names aud some of the specimens sent to us; and several fresh 

 water species collected in the vicinity of Seattle by Professors 

 H. R. Foster and T. C. D. Kincaid of the University of Wash- 

 ington. Finally, we have to record that various specimens by 

 some of the collectors mentioned above and some of the speci- 

 mens collected by DeAlton Saunders on the Alaskan coast have 

 been distributed in Collins, Holden and Setchell, P. B.-A., and 

 these have been examined by us and the references incorporated 

 into our account. 



SCOPE. 



The aim of the writers of this account, as has been hinted 

 at in the paragraph of the introduction, is to include every alga 

 which is known to them to occur on the coast or in the coast 

 country from the latitude of Cape Flattery northward to the 

 Arctic Ocean. We have included as belonging to the north- 

 western coast of North America, such islands in the region of 

 Bering Sea as belong to American countries. This has caused 

 us to include the Aleutian Islands, the Pribilof Islands, and St. 

 Lawrence Island. We have enumerated all species belonging to 

 the groups of Cyanophyceae, Pha?ophyce£e, Rhodophyceae, and 

 most of the Chlorophycete. We have omitted all account of the 

 Desmidiaceae and the Diatomaceae, since our knowledge of these 



