462 



149. L. hyperborea (Gunn.) Foslie, Ueber die Laminarien Nor- 

 wegens, p. 42; L. Cloustoni Le Jolis, Examen des espéces confondues 

 sous le nom de Laminaria digitata auct., p. 56; Kjellm., N. I., p. 298 

 (239); Laminaria digitata Lyngb., Hydrophyt., p. 20 partim. 



While a great many forms of, Laminaria digitata e. g., have 

 been distinguished, this has not been the case with the present 

 species, though it also varies considerably, at any rate in the 

 Færoes, and in a manner quite similar to L. digitata. Thus in 

 exposed situations small specimens are met with liere and there 

 near low-water mark, but rarely in great abundance, which by 

 their narrow lamina and also by the latter being often divided 

 into narrow segments strikingly resemble formå stenophylla of L. 

 digitata ; and in the interior of fjords in stagnant water the lamina 

 becomes less divided or is even entirely whole, also becoming ir- 

 regularly folded and waved just as is characteristic for formå cn- 

 cullata of L. digitata. I have not found Foslie's f. compressa in 

 my material. 



This species generally grows in the sublittoral zone, but as 

 mentioned above it mav sometimes be found near low-water mark, 

 e. g. in rock-pools. Its proper habitat is from a depth of a few to 

 as much as 10 fathoms, sometimes even to almost twice that depth. 

 It grows by preference in the open sea, but may also be met with 

 in the interior of fjords, it grows most commonly on rocky bottoms 

 which it covers with a dense forest-like growth. Frutifying speci- 

 mens were found in November. It changes its lamina during 

 winter; in the spring months large quantities of the old laminæ 

 are washed ashore but as late as May and June I found specimens 

 which still had the old lamina attached. 



This species is extremely eommon along the coasts of the Færoes 

 where it forms widely spreading growths; Lyngbye (1. c.) who does 

 not keep it distinct from Laminaria digitata writes with reference to 

 it: — »Habitat in fundo sinuum Færoensium profunditate plurium or- 

 gyiarum superficiem maris, aqua decrescente, sylvæ instar, attingens«. 



Saccorhiza bulbosa (Huds.) De la Pyl. On the authority of 

 Landt who (1. c. p. 232) mentions Fncus polgscides as found in the 

 Færoes, Lyngbye in Hydrophyt., p. 20, reports Saccorhiza bulbosa 

 from the Færoes under the name of Laminaria bulbosa. But the 

 synonyms alone which Landt mentions in the same place make 

 the correctness of the above statement doubtful, and as the species 

 has, moreover, never since been found in the Fieroes I have thought 



