The cause of plagiotropy in maritime shore plants 



7 



reaching about 15 metres landwards; then a small belt of reddish yellow Plaeodiuin 

 murale follows, which, together with the bright yellow Xanthorium parielina, domi- 

 nates the upper supralittoral belt, extending about 20 metres further inland. In 

 the epilittoral belt Ramalina scopulorum becomes very abundant as is also the case 

 in other maritime regions (Warming 30, Frödin 6, Knowles 10). The list of plants 

 found in the different belts follow. 



Lower supralittoral belt (0 — 15 m. cfr. fig. 1) 



* Plantago maritima (dominating) 

 Armeria elongata 



* Glyceria maritima 



* Spergula salina 

 Glaux maritima 

 Aster tripolium 



Upper supralittoral belt (15 m. — 35 m.) 



Armeria elongata (dominating) 

 Festuca rubra 



* Plantago maritima 



* » coronopus 



Sedum acre 

 * Cochlearia officinalis 



Transition belt (35 m.- 



The same plants as in the 



* Achillea millefolium 

 Antennaria dioica 

 Anthoxanthum odoratum 

 Bromus mollis 



* Campanula rotundifolia 



* Carlina vulgaris 



* Cerastium vulgare 



* Galium verum 



-50 m.) 



upper supralittoral belt and 



Hieracium pilosella 



* Juniperus communis 



* Lotus corniculatus 

 Luzula campestris 



* Potentilla anserina 



* Viola canina 



* » tricolor 



Lower part of talus formation (50 m. — 55 m.) 



* Arenaria serpyllifolia 

 Circium lanceolatum 

 Cynanchum vincetoxicum 

 Festuca rubra 



* Geranium robertianum 



* Glechoma hederacea 



* Leontodon autumnalis 



* Lotus corniculatus 



* Plantago lanceolata 



Rumex acetosella 

 Sedum acre 



* Solanum dulcamara f. marinum 



* Taraxacum officinale 

 Urtica dioica 



* Veronica agrestis 



* Vicia cracca 



* Viola tricolor 



