462 
149. L. hyperborea (Gunn.) Foslie, Ueber die Laminarien Nor- 
wegens, p. 42; L. Cloustoni Le Jobs, Examen des especes 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 
Faeroes, and in a manner quite similar to L. digitata. Thus in 
exposed situations small specimens are met with here 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 forma stenophglla 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 forma cli¬ 
eu llata 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 may 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 laminae 
are washed ashore but as late as May and June I found specimens 
which still had the old lamina attached. 
This species is extremely common along the coasts of the Faeroes 
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 Faeroensium profunditate plurium or- 
gyiarum superficiem maris, aqua decrescente, sylvae instar, attingens«. 
Saccorhiza bulbosa (Huds.) De la Pyl. On the authority of 
Landt who (1. c. p. 232) mentions Fucus potgseides as found in the 
Faeroes, Lyngbye in Hydrophyt., p. 20, reports Saccorhiza butbosa 
from the Faeroes 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 Faeroes I have thought 
