761 



the bottom on the coasts of the Faeroes is most often of soft 

 material, either sand or mud, and therefore destitute of plants. I 

 have however happened to meet with some small stretches covered 

 witli plant-life. In Nolsofjord, for instance, outside Gliversnaes, at a 

 depth of 20 — 25 fathoms, I found a somew^iat luxuriant vegetation 

 on larger or smaller stones, quantities of which came up in tlie 

 dredge together with the algae. 



The following species were found here: Delesseria siniiosa, D. san- 

 giiinea, Callophyllis laciniata, Rhodophyllis dichotoma, Euthora cristata 

 and Ptilota plumosa. Among the algae were several Brijozoa which 

 had a more or less reddish hue from tlie Rhodochorton membra- 

 naceum and the Rh. penicilliforme. Small crusts of species of Litho- 

 thamnion also grew on the stones, but only imperfectly developed. 

 The calcareous shells scattered among the stones had likewise a 

 reddish liue from the Conchocelis rosea and the Hijella ccespitosa 

 var. nitida, and some had become green from the Ostreobium Qiie- 

 ketti. As may be seen from this enumeration, tliis vegetation was 

 rather rich in species. 



It must be pointed out further, that all the algae, with the 

 exception of the Ostreobium, w ere red, which agrees with the theory 

 of Engelmann, (cp. Gaidukow% 35). IfNadson is right, as seems 

 likely, in declaring that Conchocelis rosea — Ostreobium Queketti, all 

 the algae found here may justly be called red algae, as it seems 

 quite natural, that an alga which takes on, now^ a red, now a green 

 hue, according to the surrounding conditions, may also be found 

 in both forms at one time. 



Below^ 25 fathoms the individuals became ver}^ w^eak and were 

 overgrown by Bryozoa, and at a depth of 30 fathoms no algae were 

 found. In Klaksvig, I have found Phyllophora Brodicei on pebbles, 

 at a depth of about 20 fathoms. 



Moreover it must not be forgotten that all these algae are com- 

 mon North Atlantic sublittoral species, growing especially in the 

 deeper parts of this region. No species characteristic for these depths 

 have been found either here or anywhere else. 



This association agrees with the sublittoral F/o/-zV/eop-formation 

 found by Rosen vinge in Greenland (p. 222); floristically however 

 it differs somewhat. 



