l()Q M. Foslie. 



nearly related to f. flaccida, but it ought perhaps to be kept 

 distinct. I think to have seen it also at Finmarken. 



The species in question is litoral, growing in tidal pools 

 epiphytic on other algae, usually Fuci, sometimes also Ghor- 

 daria flagelliformis, or fastened to stones. The plant occurs 

 on open coast as well as in the inner of deep bays and 

 seems to prefer somewhat sheltered localities. It bears zoo- 

 sporangia in June (f. flaccida), and in July and August (f. 

 typica). 



Distribution: Common and plentiful almost everywhere. 



Dictyosiphon hispidus Rjellm. 



Algenveg. Murm. Meer. p. 47. 

 Deser. Dictyosiphon foeniculaceus subspec. hispidus Kjellm. Spetsb. Thall. 



2, p. 39. 

 Fig. „ „ n „ 1. c. t. 2, fig. 1. 



In the eastern part of the district I collected a few 

 specimens of a Dictyosiphon, which I have referred to this 

 species. They do not fully coincide with specimens from 

 Novaya Zemlya, but no doubt they are referrible to the 

 present species. The short secondary branches are less nu- 

 merous than by the named specimens, and the plant much 

 reminds of D. foeniculaceus f. flaccida. The plant grews in 

 the litoral zone attached to Scytosiphon lomentarius, bearing 

 zoosporangia in the beginning of August, but sparingly. 



Distribution: Found only at Vardo, rare. 



Fam. Sphacelariaceee J. Gr. Ag. 



Alg. Med. p. 27. 



Gen. Chsetopteris Ktitz. 

 Phyc. gener. p. 293. 



Chsetopteris plumosa (Lyngb.) Ktitz. 

 L p. Sphacelaria plumosa Lyngb. Hydf. Dan. p. 103, 



