130 



6. Caulerpa crassifolia (Ag.) J. Ag. 



J. Agardh, Till Algernes Systematik, I, p. 13. Howe, Phycological 

 Studies II, p. 574. Borgesen, 1. c, 1907, p. 302. 



Caulerpa pinnata (L.) Weber-van Bosse, Monographie p. 289. 



Howe has found in a 

 specimen of Fucus pinnatiis 

 in Linne's Herbarium, now 

 in the possession of the Lin- 

 nean Society in London, that 

 ,viv„ it has distinctly cylindrical 



oxl pinnules, as is also later 



figured and described by 



_,N. \ ,-. Turner, Fuci, I, pi. 53, which 



V;/\ \^^' x^ ^ ^';) shows a form which must 



^Vv X. ^^ ^ be supposed to belong to the 



' Y C. racemosa-group. This form 



_. , ,, 'li has therefore nothing to do 



^^/jI^^/ / with the Caulerpa taxifolia 



/? crassifolia C. Ag. (Spec. Alg. 



p. 436) on which variety J. 



A/ l^J Agardh has based his species, 



|X) V^ z^ rA'i; ^iid in the remarks to the 



^^: \y '" species he also writes: »utrum 



"s^-^' I synonyma ibidem allata (F. 



^1 I / pinnatus Linn. & Turn. Hist. 



^ 7 / ^„_ tajj 53^ ad eandem 



pertineant, dicere non 



^ r/ -\ '^": auderem«. Agardh's 



" name must therefore 



'^ be used. 

 Fig. 102. Caulerpa crassifolia (Ag.) J. Ag. FliCllS crassijoUus 



Form growing in shallow water in the Lagoon • , i j> i i ^i 



of Christianssted. (About 1:1). is to be found both 



in shallow water and 

 deeper down to a depth of at least 30 meters. It prefers sheltered 

 coasts; on somewhat exposed places it can exceptionally be found 

 but it is rare here and the specimens are only badly developed. 

 At Cane Bay on the north side of St. Croix I thus found some small 

 and few specimens growing behind a small coral reef near the shore 

 and at White Bay I have found it in about 14 meter of water grow- 

 ing among other algae. In the last mentioned locality, somewhat 

 far out in the open bay between the last westerly part of the long 

 coral reef which stretches along the south coast of St. Croix and 



