763 



brown tufts of Dictijosiphon foeniculaceiis , Chordaria flagelliformis, 

 Stictyosiphon tortilis, Ectocarpus siliculosus and E. litoralis together 

 with gregarious growths of Phyllitis fascia and Scijtosiphon. Among 

 these darkish algæ the fresh green Enteromorpha Linza lightened 

 up the vegetation, in which Urospora Wormskioldii, Monostroma fusciim 

 and other green algæ were still intermingled. A little farther out 

 in a few feet of water large specimens of Laminar ia saccharina were 

 found mixed with the association. 



On the banks of the »Sundene« between Thorsvig and Kvalvig, 

 a very similar vegetation is found. The bottom here is of sand 

 with large stones and pebbles. From the lowest water mark down 

 to a depth of from 3 to 6 feet we find an assemblage of algæ of 

 many colours e. g. Cystocloniiim purpiirascens . Castagnea virescens, 

 Punctaria plantaginea, Ectocarpus siliculosus and E. litoralis, Dumontia 

 filiformis, Chorda fdum, Enteromorpha Linza and several of the 

 above mentioned species. At a short distance from the land, where 

 the water is from 4 to 6 feet deep, the Laminaria fau-oensis-assoc'm- 

 tion covers the bottom. 



Neilher of the two above mentioned tracts are tidal, but a tidal 

 locality with a similar vegetation from the lowest water-mark down- 

 wards to a depth of from 4 to 5 feet is found on the coast of the 

 Vestmanhavn. This vegetation includes: Monostroma fuscum, Ce- 

 ramium rnbrum, Porphyra miniata, Rhodymenia palmata, large 

 »clouds« of Ectocarpus litoralis, Enteromorpha clathrata, Dumontia 

 fdiformis, Chorda fdum, the upper part of whose thailus floats on 

 the surface of the water, and many more. 



In Vestmanhavn and likewise in Klaksvig, where the vegeta- 

 tions much resemble each other, Halosaccion ramentaceum, otherwise 

 very rare in the Færoes, is found. In Klaksvig it grows abund- 

 antly on stones to a depth of a few feet at low water, and it is 

 most often much overgrown by green algæ e. g. Enteromorpha, 

 Acrosiphonia, etc. 



In the Danish edition I have called this association »The varie- 

 gated Association«, because of its very motley appearance, due to 

 the many different species which belong to it. But as this name 

 has already, as pointed out by me (10, p. 70), been used by Kjell- 

 man (45, p. 24) I have found it more convenient to change the 

 name, since the association of the Færoes is quite different from 

 that of Bohuslån. 



Botany of the Færoes. 49 



