'•■ Y 



BOTANICAL 



Qakul.n 



List of Marine Algae collected in Caroline 

 and Mariana Islands, 1915. 



By 

 Kiutard Okaniura, Rigakuhakusbi. 



With PL I and 9 text figs. 



In 1904 I have studied marine algae from Caroline Islands 

 and Australia and have enumerated them in the " List of 

 Marine Algae collected in Caroline Islands and Australia." ^^ 

 In the present year (1915) I have had a chance to study the 

 materials collected by several gentlemen chiefl\^ in Caroline 

 Islands. The materials were partly preserved in formalin and 

 alcohol and partly in herberial form. The name of coUecters 

 and localities are as follows. 



B}^ Mr. Y. Okuda Axigaur, Truk, and Saijoan Jan., 1915. 



,, Mr. T. KosHiDA Ponape, at Bay of Rangal 12, Dec, 1914. 



,, Mr. N. Yanagi > Ponape, Kusai, and Saipan May, 1915. 

 „ Mr. S. FujiTA and 



K. AoKi Truk Feb.-March, 1915. 



,. Mr. S. Mayeda Yiip 22, May. 1915. 



„ Mr. K. MiYAKE Truk 7 & 29, May, 1915. 



„ Mr. Y. Okada Palao 25, July, 1915. 



„ Mr. K. Shimazaki Yap Feb., 1915. 



,, Mr. Amenomiya Truk 15, March, 1915. 



The present list numbers 28 species of Chlorophyceae, 11 

 sp. of Phaeophyceae and 22 sp. of Rhodophyceae, among which 

 three are new to science namely Dilophus repens, Haliseris 

 repcns and Halarachnion calcareum. Of the novelties, Halara- 

 chnion calcareum is only species of the genus known to be 

 impregnated with lime in the inner tissue of the frond. 



1) Botanical Mag. Tokyo, Vol. XVIII, No. 209, p. 77-96, 1904. 



