933 



common on the coast-clifTs, viz. Grimmia maritima and Weissia ma- 

 ritima. They do not approach the sea so much as some of the 

 hchens, hence we must distinguish two zonal associations: The 

 Ramalina association [seeFig. 116) and the Grimmia-Weissia 

 association. 



The phanerogams of the coast-cHfTs are not quite so character- 

 istic; but occasionally chomophytes of the coast-clifTs mav be found. 



Fig.176. Coast-cliff plant-formation at the Skanse in tlie vicinityof Thorshavn; Ramalina and Placodium 

 (Ihe light coloured spots) are dominant. (From photo. by F. Borgesen). 



The terraces and the crevices of the coast-chfTs frequently liarbour 

 Armeria, Cerastium tetrandiim, Cochlearia officinaUs, Haloscias, Matri- 

 caria inodora phaeocephala and a luxuriant form of Plantago mari- 

 tima; Lotus cornicnlatns carnosiis is also frequent, and where the 

 soil in the crevices is wet, one can nearly always find Glyceria di- 

 stans, and (on Sydero) G. maritima. The latter two species do not 

 belong to the typical chtf-vegetation (Haloscias association), 

 but they indicate a rudimentary salt-marsh and should be included 

 in this formation (cfr. p. 927). 



In addition to these species or forms of species typical of the 

 coast, we naturally meet with several representatives of the ordinary 

 cliff- vegetation, such as Sedum rhodiola, Cerastium vulgare, Angelica 

 silvestris, Festuca rubra and other grasses. 



