OF ARTS AND SCIENCES. 469 



XXVI. 



NOTES ON ARCTIC ALG^ ; BASED PRINCIPALLY 

 ON COLLECTIONS MADE AT UNGAVA BAY BY 

 MR. L. M. TURNER. 



By W. G. Farlow. 



Communicated May 12, 1886. 



In 1883, Dr F. R. Kjellman communicated to the Swedish Royal 

 Academy a monograph of " The Algse of the Arctic Sea," which has 

 since been issued as a separate publication. No botanist has ever had 

 such advantages for acquiring a knowledge of Arctic Algne as Dr. 

 Kjellman, who accompanied Nordenskiold in several of his voyages, 

 and his admirable treatise must form the basis of any study of Arctic 

 forms. Those interested in the literature relating to the Algae of 

 Greenland and the Arctic shores of the eastern coast of America 

 will find a complete account in Dr. Kjellman's work. In the present 

 connection, it is my object to give a summary of the species of marine 

 algte collected by American explorers in Arctic regions in recent 

 years, especially those of a date subsequent to the completion of Dr. 

 Kjellman's great work. 



The largest of the collections was that made by Mr. L. M. Turner 

 at Ungava Bay in 1884. It included a considerable number of 

 mounted specimens, besides some rough-dried material, which was 

 soaked out and mounted subsequently. This collection is especially 

 interesting because it contains a number of species of Floridece which 

 are seldom seen in herbaria. Not only are the species themselves of 

 great interest, but they are here represented, in several cases, by large 

 sets of specimens, which enable one to estimate the amount of varia- 

 tion in specific characters. This is a point of considerable importance, 

 for, except in rare cases, only a very small number of specimens of the 

 less common Floridea; are to be found in Arctic collections. 



I have also examined a second collection, made by Dr. Ludwig 

 Kumlien, the botanist of the Howgate Polar Expedition in 1877-78, 

 which includes some interesting Phceosporea:. The algae collected by 



