123 



of rhizomes only, so that 

 it is often rather difficult 

 to see that the plant re- 

 ally has a creeping rhi- 

 zome (Fig. 96). Reinke, 

 also, questions whether 

 the plant really has a 

 creeping rhizome^). In 

 my paper above cited 

 (1910) I have pointed out 

 that this apprehension is 

 not right and I have there 

 given the figure which 

 I again reproduce here 

 (Fig. 96). 



Caulerpa (^erticiUata 

 grows in Danish West 

 India in sheltered places 

 only and it shows in this 

 fact a difference in com- 

 parison with its occur- 

 rence in Cevlon where as 



Fig. 96. Caulerpa verticillata J. Ag. (About 1 :1). 



Fig. 97. Caulerpa verticillata J, kg. I. charoides 

 (Harv.) Weber-van Bosse. From Krause's 

 Lagoon (St. Croix). (About 1:1). 



mentioned by Svedelius 

 it is to be found on 

 rather exposed coasts^). 

 In the adjoining 

 illustration, Fig. 98 a 

 shows the uppermost 

 part of an erect growing 

 shoot with two whorls 

 of leaves of w^hich the 

 uppermost is yet quite 

 young consisting only of 

 roundish swellings; the 

 lowermost are already 

 dichotomously divided. 

 Fig. 98 b shows a some- 



^) Reinke, J., 1. c. p. 27. 



^) Svedelius, W., Ecological and systematic Studies of the Ceylon species 

 of Caulerpa. (Ceylon marine biological Reports, No. 4, 1900, p. 93). 



