34 M. Foslie. 



This alga I only have met with in the litoral region, 

 partly in rock-pools, partly on stones and rocks in the lo- 

 wer part of the region, often at extreme low-water mark, on 

 open coast as well as on sheltered places. It probably also 

 descends into the sublitoral' zone. Specimens found in June 

 and July have been sterile, but in the middle of August 

 bearing young tetrasporangia. At West-Finmarken I have 

 collected it with tetrasporangia in the later half of July and 

 in August; in Tromso amt in May, and at Nordland in June, 

 September and February. 



Distribution: Scattered along the whole coast; at some 

 places pretty common, as Kjollefjord and Pasvig. 



Fam. Dumontiacese J, G. Ag. 



Epicr. p. 249. 



Gen. Halosaccion (Kiitz.) Rupr. 

 Alg. Och. p. 292; Kvitz. Phyc. gener. p. 439; char. mut. 



Halosaccion ram e -n t a c e u m (L.) J. G. Ag. 

 Spec. Alg. 2, p. 358; Fucus ramentaceus L. Syst. Nat. 2, p. 718. 



f. rdbusta Kjellm. 



N. Ish. Algfl. p. 196. 

 Descr. Halosaccion ramentaceum f. robusta Kjellm. 1. c. 

 Fig. „ „ „ 1. c. t. 12, fig. 4 et 



tab. 13. fig. 1—2. 



f. ramosa Kjellm. 



N. Ish. Algfl. p. 190. 

 Descr. Halosaccion ramentaceum f. ramosa Kjellm. 1. c. 

 Fi 9> » » t. 13, fig. 4. 



a major Kjellm. 

 1. c. 



(S minor Kjellm. 

 1. c. 



