JOURNAL OF THE COLLEGE OF SCIENCE, IMPERIAL UNIVERSITY, 



TOKYO, JAPAN. 



VOL. XXI., ARTICLE 12. 



The Fucaceœ of Japan. 



K. Yendo, Ricjabislii. 



With 18 phdeft. 



INTRODUCTION. 



The family Fucaccœ {Cyclosporeœ) is in tlie jirosont jXTper 

 taken with the same limitations as by Kjellmax" in Exgleti 

 and Prantl's " Die Xatürlicheii Pflanzenfamilien," in which he 

 included the Sargassacecv and Fucaceœ of other systematists. 



In the "Nippon Sörui Mêi " (Enumeration of the Algjp of 

 Japan) published ])y Dr. K. Okamura^' in 1902, 5C) species of 

 Fucaceous algie are mentioned under 7 genera. The list comprises 

 all known species from Japan reported by various botanists up 

 to that date. Among those mentioned, 39 species belong to the 

 genus Sargassum, 8 to Cystophyllum, and one or two to each of 

 the remaining genera. 



The first knowledge of Japanese Sargasmm we owe to the 

 elaborate work of TrRXEii."' A few species more were added 

 by various European algologists, such as ('. Acjardh,'*' Kïïzixg"'^ 



1) 1 Theil. 2. Abth. p. 208. 



2) pp. 137-160. 



?,) Historia Fucorum. 1808-1818. 



4) Species Algarnm. 1821, 1828. 



5) Ueber die Eigeutliiimliciilceit der Vegetation in die chinesischen und japanisclien 

 Meeren — lîotani<che Zeitung, 184.'!. s. .').1-.")7. 



