725 



tation must certainly greatly resemble that of the Færoes, as all 

 the forms named by S trom felt are, according to my definition of 

 species, similar to or at least closely connected with Fucus inflatas 

 f. disticha (compare Jonsson 41, p. 184). 



As to Greenland, Rosenvinge writes (71, p. 199) as follows: 

 Where the coast is exposed to the dashing of the waves, the vege- 

 tation bears a totally different stamp. The Fucaceæ are either 

 entirely absent or limited to deeper clefts in the rocks or to pools 

 (Fucus inflatus)«. 



It has since been said by Si m mons (66, p. 178), that this 

 circumstance may be due to the ice. This may possibly be true 

 in some cases, but probably not in all. 



In describing the algæ vegetation of the Murman Sea, Kjell- 

 man writes (44, p. 59), after pointing out that all littoral algæ are 

 low: »Fucus evanescens, welche am håufigsten innerhalb des lito- 

 ralen Gebietes angetroffen wird, scheint mir mit Recht den Namen 

 {f. 77077«) zu verdienen, den ich ihr gegeben, denn sie ist selten uber 

 6 ctmr. hoch und immer sehr schmal«. There must likewise be 

 some resemblance between this and the Færoese vegetation. 



It may be supposed, that Fucus spiralis is found on the Ork- 

 neys in localities resembling those in the Færoes (see Traill, 81, 

 p. 316, who calls it Fucus platycarpus). If Fucus anceps, as I think\ 

 ought to be regarded as a form of Fucus inflatus f. disticha, the two 

 characteristic forms of the Færoese formation are found on the 

 west coast of Ireland. At Biarritz Sauvageau^ has found some 

 quite small specimens of Fucus spiralis, which certainly grew on 

 an exposed coast there. On the northern side of Kullen, on steep 

 rocks a little above the sea level, I have met with a dwarfish form 

 of Fucus spiralis, that is, a very similar vegetation, only that Fucus 

 inflatus f. disticha is also wanting here. 



The Callithamnion- Association. 



The above -mentioned types of vegetation have their habitats 



above the easily distinguishable white line formed by Balanus and 



bivalves. We shall deal next with an association growing in and about 



this »animal association«, which is found at about the highest \vater 



*dendroides genom en mångd former forbunden med de åfvenledes derstådes upp- 

 trådande f nana af ^arcticus och f contracta af "iiorvegicus. 



^ Judging by a few small specimens kindly sent me by Mr. Batters. 



^ Sauvageau, C. Note préliminaire sur les algues marines du golfe de Gas- 

 cogne, p 6—7 and p. 22 — 23. (Extrait du Journal de Botanique, XI, 1897). 



