﻿PLATE XV. 



Boodlea COacta (Dickie) Murray et De Toni. 



ANADYOMENE/E (Valoniaces). 



Nom, Jap, Atvo-mog?isa, 



Boodlea coacta (Dickie j Murray et De Toni Journ. Linn. Soc, Bot., 

 XXV， p. 243-245, pi, XLIX; De Toni Syll. Alg" I， p. 363 ； Wille in 

 Engl. u. PrantFs NatiirL Pflanzenfam., I.， Theil 2., p. 151. ― Ltadophora 

 coacta Dickie Journ. Linn. So に， Bot., XV, p. 451. 



Frond depresso-globular or sub-hemispherical, 2-7 cm. in 

 expansion, attached to substratum by its base, sponglose, composed 

 :of densely anastomosing cylindrical cells. As the frond grows in 

 size, the older cells decay, making hollow at its base. し ells 2-10 

 times long as broad, brancuing repeatedly in every direction, with 

 one or two ramuli at nodes, adhering to each other and other 



， o 



cojects coming in contact with the frond by scutate tenaculae 

 which arise from the apices or sides of ramuli. Colour prass- 

 green. 



Hab. On sandy rocks and various algae between tide marks. 

 Ishigaki-jmia (Kuroiwa), Ogasawara-jima (Matsumoto), Tosa, Suno- 

 saki and Shirahama (Prov. Boshu) ； Oshima Harbour (Challenp-er). 



Hitherto-known : Isl. Manp"aia in the Pacific, lat. 21° 57^ S.， 

 long. 158 W. Greenwich, [Gill under the name of Microdictyon 

 Montag7iei Harv. in L'ickie s Algae of Mangaia (Journ. Linn. 

 Soc" Bot., XV， p. 33)]. 



In the course of my studying this alga, I found in the Her- 

 barium of the Tokyo Imperial University a specimen labelled 

 Cladophora composita Harv'., collected by C. Wrip-ht in Loochoo 



