﻿( ii ) 



institution of this country for the convenience of the students 

 of algae, I had to gather the literature and specimens absolutely 

 myself with very limited allowance of means. Consequently 

 the literature which are quoted under each species are restricted 

 only to those which I had chance to concert with. 



Before closing this preface, I would like to express my 

 sincere thanks to those who have assisted me by specimens and 

 works : to Prof. J. G. Agardh of Lund ； to Mr. Reinbo，d of 

 Itzehce ； to Prof. N. Wille of Christiania ； to Dr. Kjellman of 

 Upsala ； to Prof. Kj. B. de Toni of Padova ； to Dr. M. Foslie 

 of Trondjehm ； to Prof. J. Reinke of Kiel ； to late Prof. Fr. 

 Schmitz, and others. To late Prof. Dr. R. Yatabe, my first 

 instructor on botany, 丄 wish to render thanks for the peneral 

 guidance he gave on my stuiy. Lastly, I would like to acknowl- 

 edge all kinds of help given by those who have sent me 

 materials from different localities of this country. 



October ist, 1900, 

 Tokyo. 



K. OKAMURA. 



