78 M. Foslie 



The most common form of the species is f. linearis. In 

 much exposed localities, for inst. Omgang, it becomes very 

 luxuriant, attaining a length of 4 metre and more. It grows 

 in the limit between the litoral and the sublitoral regions, 

 and descends to a depth of about 2 — 3 fathoms. Here it is 

 succeeded by f. oblonga, which descends to a depth of about 

 8 fathoms. The other forms generally occur farther down, 

 up to about 20 fathoms. A reduced form that appears in 

 rock-pools between tides I have referred to f. oblonga. It 

 sometimes is reniform with truncated top. 



The plant seems to develop its reproductive organs in 

 the winter or early in the spring. In the summer specimens 

 have often been met with bearing fragments of an earlier 

 lamina even as late as in the later part of July. 



Distribution: Common and abundant almost everywhere. 

 The form linearis only along the unsheltered and exposed 

 part of the coast; f. 'oblonga in exposed as well as in somewhat 

 sheltered places; f. longlssima and f. borealis enter the inner 

 end of the deep bays; f. Agardhii only found some few times 

 on open coast. 



Laminaria nigripes J. G. Ag. 



Spetsb. Alg. Till. p. 29. 

 Descr. Laminaria nigripes J. G. Ag. 1. c. 



„ „ „ Gronl. Lam. och Fuc. p. 17. 



„ „ Kjellm. N. Ish. Algfl. p. 295. 



Fig. „ „ „ t. 25, fig. 8-10. 



Syn. Laminaria nigripes Fosl. Lam. Norw. p. 58. 



I have but rarely met with this species washed ashore. 



It probably grows in the upper part of the sublitoral region. 



But I suppose it to be more commonly spread along the open 



part of the coast. The specimens I have seen are most nearly 

 ■ to be related to f. oblonga Kjellm. 

 ' .;:■■' Distribution: Found at Berlevaag, a few specimens, and 



at Yardo, a single specimen. 



