6 [No. 2.] 



have been fastened. Judging also from the carpogon found in T. 

 s&ptemtrionalis which accords with that in T. Pennyi, the only 

 reproductive organs observed in the latter, both the named plants 

 no doubt belong to one and the same species. It is not likely 

 that the cystocarps in T. Pennyi are different from those in T. 

 septemtrionalis, and, therefore, the latter is, in my opinion, most 

 highly to be considered as a denominated form of the latter. 



This species appears not only to live within the arctic circle, 

 bnt is probably to be found even in more southern waters than 

 hitherto known, as it at least on the Norwegian co ast apparently 

 grows larger to the south. 



Trondhjem, April 1896. 



