12 



M. /oslte. 



But only this species lias been found on the mentioned host 

 plant in Nordland and at Iceland. 



JDistribuiion : Only found at Kiberg in Varanger, very 



rare. 



Fam. Rhodomelaceæ J- G. Ag. 



Symb. p. 33; Spee. Alg. 2, p. 787. 



Gen. Odonthalia Lyngb, 



Hydr. Dan. p, 9. 



Odonthalia dentata (L.) Lyngb. 



1. c. Fucus dentatus L. Mant p. 35. 

 Beser. Odonthalia dentata J. G. Ag. Spee. Alg. 3, p. 899. 



Fig, 



"Exsicc. 



n 



tt 



M 



W 



Harv. Pliyc, Brit. t. 34. 

 Alg. Scand. exsicc. Nr. 56. 



Syn. Fucus dentatus Gunn. Fl Norv. 2, p. 91. 



»f 



pinnatifidus Gunn. 1. e. p. 104. 



Also at East-Finmarken occur two forms of this species, 

 bne with broader, the other with narrower frond, f. angusta 

 Harv., bnt as stated by K j e 1 1 m a n they rnn so gradually in- 



^ 



to each other that no lirait can be drawn between them. 

 The former occosionally grows on open shore and the latter 

 in the interior of deeper bays, or on sheltered plac^s. At 



3 ■ ' 



Kirkenæs in Sydvaranger I met with a form which had a 

 thread-narrow frond, but also this seems to run into the 

 narrow one raentioned above, and raay be regarded only as 

 a local variety. As well known, several pelagic algæ get 

 a form more or less differing when they enter into deep 

 bays or grow on much sheltered localities. 



The species in question is sublitoral anl occurs on a 

 depth o£ 3 — 20 fathoms, on various bottom It seems to 

 be best developed on stony, shelly or gravelly bottom on a 



depth of 6—1^ fathoms, ajid thejx commonlv growing toge- 



: 



