Notes on Algae New to Japan. 11. 



In 1909, I have published an article in this Magazine^^ 

 enumerating those algJE which were already described but not 

 known to occur in Japan. Since that time there have been detect- 

 ed many other species to be supplemented to the article, beside 

 those published by Okamdra in his Icones of Japanese Alg£e. 



During the last two years I have paid visits to various 

 herbaria in Europe with the purpose of studying the authentic 

 specimens of marine algas as well as of solving the questions 

 relating to the species hitherto assigned to Japan. By this 

 tour I was able to make clear many of the doubts which I had 

 held for years. The present paper is mainly a part of the 

 result and shall be taken as the second article of the already 

 published one. 



It is highly interesting to note that the algal flora of Japan, 

 as it is more closely investigated, proves to have more and 

 more connections with that of the Atlantic Ocean and that of 

 the east coast of the Pacific, than has hitherto been supposed. 

 The Australian species, also, are gradually increasing in its 

 number in the list of alga? from southern Japan. 



Enteromorpha prolifera J. Ag. 



Till Alg. System. YI, p. 129. Tab. 4, fig. 103-104-Colllns : 

 Green Alg. of North Amer. p. 202. 



There are more than a dozen of Enteromorpha already 

 assigned to our country by the European algologists. It is to 



1) Vol. XXIir, No. 270. p. 117-133. 



