198 
ökologiska delen af Börgesens arbete, vill jag gifva 
en öfversigt af regioner, associationer och facies, sâ- 
som jag i hufvudsak anser dem böra grupperas. 
Regioner, associationer och facies i den färöiska 
hafsalge Vegetationen . 
I. Supralitoralregionen. 
Blandade associationer(hafs- Brackvattensassociationer 
alger tillsammans med lafvar, (Enteroraorpha- , Prasiola.^Cla- 
mossor, etc.). dophora-,Rhizoclonium-facies). 
II. Litoralreerionen. 
1. Porphyr a-associationen. 
2. Pelvetia-ass. 
3. Ceramium-Callithamnion- 
as8. 
Ceramium-facies. 
4. Rhodochorton-ass. 
5. Bangia-Urospora-ass. 
Bangia-facies, 
Urospora-facies, 
Ulothrix-Codiolum-fa- 
cies. 
6. Rhodymenia-ass. 
Klippfacies, 
Epifytfacies. 
7. Hildenbrandtia*ass. 
Ralfsia-facies, 
( Calothrix-facies ?). 
8. Corallina-ass. 
Gigartina-facies, 
III. Sublit' 
1 . Phymatolithon-associatio- 
nen. 
2. Laminaria digitataass. 
Laminaria saccharina- 
facies, 
Halidrys-Dictyosiphon- 
facies. 
3. Alaria-ass. 
Chylocladia-facies, 
Monostroma-facies. 
9. Acrosiphonia-Polysipho- 
nia-ass. 
Acrosiphonia-facies, 
Polysiphonia-facies. 
10. Enteromorpha-ass. 
Enteromorpha-facies, 
Cladophora-facies. 
11. Ulvacé-ass. 
(Faciesutbildning?). 
12. Fucus-Ascophyllum-ass. 
Fucus vesiculosus-Asco- 
phyllum-facies, 
Fucus spiralis-facies, 
Fucus inflatus-facies, 
F ucus-Porphyra-facies. 
13. Himanthalia-ass. 
r alregionen. 
4. Laminaria hyperborea-ass. 
(med epifyt associatio- 
ner). 
5. Laminaria faeroensis-ass. 
6. Desmarestia-ass. 
7. Lithoderma-ass. 
(Facies utbildningar?). 
8. Zostera-ass. 
