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the lower limit of the laminaria-zone. It seems to prefer rather exposed 

 coast. Smaller specimens are met with in pools in the lower litoral region. 

 I have occasionally met with specimens with spirally twisted lamina. 



Fam. Fucaceæ. 



Fucus spiralis L., Kjellm. Arct. Alg. p. 202, Strömf. Algveg. p. 35, 

 Börgesen Fær. Alg. p. 472; Fucus Areschougii Kjellm. Handbok p. 11. 



This species occurs at high-water mark gregariously or solitarily, often 

 in company with Pelvetia canaliculata. It is found both on exposed and 

 somewhat sheltered coasts. 



f. typiea. The specimens I have referred to this form are fully 

 agreeing with the plant distributed by Areschoug (Alg. scand. exsicc. 

 no. 54), and the figure given by Börgesen (1. c. p. 473, f. 94). I have 

 not found it in the most exposed situations, and it seems to prefer some- 

 what sheltered coasts. 



f. borealis Kjellm. 1. c. Specimens entirely agreeing with Kjellman's 

 description I have found in much exposed places. They are lower, of more 

 leathery substance and much more spirally twisted than the typical form. 



Specimens with fully developed receptacles are met with in April — 

 October. The species is most common in SW.- and S. Iceland. 



E. I cel. Djüpivogur; Seley (Strömfeit). 

 N. I c el. Skalholtsvik, Broddanes. 



SW. I cel. Flatey, Öndveröarnes, Reykjavik, Skerjafjöröur ; NjarÖvfk 

 (CO.). 



S. I c el. Vestmannaeyjar. 



Fucus inflatus L., M. Vahl Fl. Dan. Tab. 1127, Foslie Krit. Fortegnelse 

 Tromsö Museums Aarshefter, IX p. 109, Kjellm. Handbok p. 11, Rosenv. 

 Grl. Havalg. p. 834 , Börgesen Fær. Alg. p. 465; Fucus evanescens Strömf. 

 Algveg. p. 35 ; F. edentatus, F. furcatus and F. evanescens J. Ag. Spetsb. 

 Alg. p. 40; F. furcatus Kleen Nordl. hafsalg. p. 29; F. edentatus Del. Pyl. 

 Fl. Terre Neuv. p. 84. 



For a long time (about from 1800 to 1886) l ) the name Fucus inflatus L. 

 was not used of an independent species, but either regarded as synonym 

 to Fucus vesiculosus or given to a form of it ; on the other hand forms 



l ) According to Linné's description of F. inflatus (Fl. Lapp. 1737 p. 357) and 

 especially the figure in Tab. 1127 and the description given by M. Vahl in 

 Flora danica, Foslie (1. c.) points out that F. inflatus L. is identic with the 

 Norwegian F. edentatus (= F. furcatus Kleen). In this connection it may 

 be added that specimens gathered by M. Vahl in Nordland and determined 

 as F. inflatus L., fully agreeing with the typical F. inflatus L. as it is under- 

 stood now, are to be found in the Botanical Museum at Copenhagen. 



