455 



L. færoensis with its hollow stem being the one which comes 

 most near to L. longicruris, I will now go more i'nlly into the points 



«& 







"Sft 





S/tf 

 Pig. 86. Laminaria færoensis nov. sp. f.typica. From Sundene. With sorus. (C. Thornam del.)- ' n : '• 



which, in addition to the above-mentioned characters, separate 

 these two species. In his notes on the occurrence of muciparous 

 canals in the Laminariaceæ Guignard 1 observes that Laminaria 

 longicruris has muciparous canals both in the lamina and in the 



1 Guignard: Observations sur Pappareil mucifére des Laminariacées (Annales. 

 des seiences nat.. VII sér. Hot., t. 15. 1892). 



