15 

 Fronds with naked and slender surculus sendino- root-fibres 



o 



below and aerial shoots upwards. Aerial shoots simple', sub- 

 dichotomous or alternately branched, fastigiate, ca. 3 cm. hi'^h, 

 loaded with sometimes many and closely set, sometimes few and 

 scattered ramuli which are opposite, alternate or subverticillate 

 standing in different directions ; they are longer or shorter, usually 

 cylindrical or slightly swollen toward the obtuse apex. All the 

 parts are slender and there is no difference in thickness between 

 surculus and erect branches. 



Hub. : Ishigaki-jima (Ryukyu ; leg. M. Tago). 



In our plant the upper half of aerical shoots is more intensely 

 colored as Mr. Borgesen and Mine. Weber van Bosse already stated. 



PL. CLIV, fig. 9-13. Fig. 9: frond of Canterpa. fastigiata Wont, 

 isolated, \. Fig. 10 ' portion of frond, \. Fig. 11 : upper portion of aerial 

 shoot, J-. Fig. 12 : branch, 1 1 3 . Fig. 13 : strands of cell-memerane, *%. 



Caulerpa fastigiata Mont. 



^ CLIV gjJK, 9-13 H. 



us - m m * * 7 n st * /" na m ? ft *, 



-> T # - *R J & * ; m. i * r ffi - ^^ 

 ,&" % ~& t, m 3 cm ;a 9 , /h 



--- * -> 7- @ =, BS * ^ t ^ -> ^ m r *, a 



- -' ;fr 3 ? ^ 10 - ^ m * UJ ^ ; M -> ^ S 



: 5fc 3$ 5 H S (^ m J S A')- 

 : IS PP fit ; 7* ? j? ^, iff j-f: m 



