XII 



Ciitleriaceæ. 

 El Cutleria multifida . . . 



Tilopteridaceæ. 

 B2 Haplospora globosa*' 

 E2 Scaphospora Kingii . . 

 E2 Tilopteris Mertensii . . 



Fucaceæ. 



D Fuciis spiralis 



D F. ceranoides 



B2 F. inflatus 



D 

 C 

 D 

 C 

 D 



F. serratus 



F. vesiciilosus 



Pelvetia canaliciilata . . 



Ascophijlliim nodosum^ 



Himantlialia lorea .... 

 El Halidrys siliquosa .... 

 Es Bifupcaria tuberculata , 



Es Cystosira ericoides 



Es C. granulata 



Es Sargassum bacciferum 

 Es S. Filipendula 



Dictyotaceæ. 



Es Taonia Atomaria 



E2 Dictyota dichotoma . . . 



+ 



+ 



^ eta 



+ 



+ 

 + + + + 



+ 



+ + 



+ + 



+ 



4- 



4- 



++ 



+ 

 + 



+-- 



++ 



t 



t 



^ We have referred Bangia crispa to this species. 



* We refer Porphyra amethystea Kiitz. to P. umbilicalis. 



' This species has been collected by Helgi Jénsson at Kolbeinså in N. W. 

 Iceland, but no reference to it has yet been published. 



* Found by F. Børgesen 1905 near Cliristianssund. 



* As Gymnogongriis Torreyi (Ag.) J. Ag. is not sufficiently known , we prefer 

 to omit it from the list. 



" We have seen several specimens of T. rosacea J. Ag. from Spitzbergen in the 

 collection of the Botanical Museum in Copenhagen. Some of these specimens have 

 been collected by Berggren and determined by J.Agardh, and some have been 

 communicated by .1. Agardh. As these piants fully agree with the description of 

 T. Pennyi, T. rosacea must be considered as identical with this species. (Cfr. 

 J. Agardh, Species, Genera et Ordines Algarum. Vol. 3 p. 221). 



' According to original specimens, Halosaccion piibescens Foslie is to be con- 

 sidered as bclonging to the form series of Halosaccion ramentaceum nearest related 

 to f. siibsimplex. 



^ Including Delesseria angustissima (Turn.) Grev. 



^ This species has only been found cast ashore on the coast of New England. 



'•^ Dr. L. Kolderup Bosenvinge has most kindly told us that P. Schiibelerii 

 Fosl. is a form of P. elongata and that he considers P. fibrillosa (Dillw.) Grev. as a 

 form of P. violacea. 



