448 



This species grows in shallow water down to a depth of a few 

 fathoms, especially in sheltered situations. It is consequently com- 

 mon in the interior of fjords and mav even be met with right at 

 their head where the water is brackish owing to the fresh-water 

 streams entering the sea. It grows by preference on gravelly 

 bottoms attaching itself to pebbles and shells, and where the water 

 is V2 to 1 fathom deep it often forms a dense growth; the topmost 

 part of the thallus may then be seen floating on the surface of 

 the water. 



Sporangia-bearing piants were found in May, June, July and 



October. Specimens from the spring months were young and still 



small, during the summer they attained to their highest development, 



while specimens gathered as early as October were more or less 



decayed. It probably dies away completely during the winter, as 



is doubtless also the case along the Danish shores. 



This species is common along the sheltered coasts of the Færoes. 

 Bordo: Klaksvig (H. S.,!); Ost.: Skaalefjord (H.S., H.J.), Kvalvig (H. J., !.), 

 Sundelaget H.S.); Str.: Kalhakfjord (Rostrup, !); Nolso: Ejde(!); Syd.: 

 Trangisvaagfjord (Ostenfeld, !). 



143. Ch. tomentosa Lyngb., Hydrophyt., p. 74; Reinke, Atlas, 

 tab. 20. 



This beautiful alga was found in the sublittoral zone both in 



shallow water on rocky coasts, and in deeper water (some 5 to 6 



fathoms) in Haraldsund where a strong current was running. Here 



it grew attached to stones and shells associated with Laminaria, 



Alaria and other algæ, and occurred abundantly in vigorous ex- 



amples several feet in length. 



Fructifying specimens were found in May. Found hitherto only on 

 Bordo: Aaerne near Haraldsund (!); Ost.: Molen (!) and Ejde (!). 



Order LAMINARIACEAE. 

 ALARIA Grev. 



144. A. esculenta (L.) Grev. Kjellm., N. I., p. 265 (212), Handb., 

 p. 19; Laminaria esculenta Lyngb., Hydrophyt., p. 23. 



f. tgpica. 



f. pinnata (Gunn.). 



Fig. 84 represents the form most commonly met with in the 

 Færoes, and the one which I regard as typical. The lamina is 

 long and very narrow in comparison. One speeimen which was 



