APPENDIX II 219 



III. The Plant Formation of Salt (NaCl) Soils. 



1. Associations of open Salt Marshes (Salicornietum europaeae ; 



S. ramosissimae). 



2. Associations of intermediate or mixed Salt Marshes (e.g., 



Staticetum maritimae). 



3. Association of salt marsh grassland (e.g., Glycerietum mari- 



timae). 



4. Associations of retrogressive Salt Marshes (e.g., Atripli- 



cetuin portulacoidis). 



5. Associations of Spray-washed Rocks (e.g., Crithmetum 



maritimi). 



6. Associations of Strand Plants (e.g., Atripliceta; Salsoletum 



kali). Transitional to dunes. 



7. Associations of Maritime-fen Grassland. Transitional to fens. 



IV. The Plant Formation of Sand Dunes and Shingle Banks. 



1. Associations of Embryonic Dunes (e.g., Agropyretum juncei). 



2. Associations of Shifting Dunes (e.g., Ammophiletum 



arenariae). 



3. Associations of Fixed Dunes (e.g., Festuceta). 



4. Associations of Retrogressive Dunes. 



5. Associations of Shingle Banks. 



V. The Plant Formation of dry Sandy and Gravelly Soils. 



1. Associations of dry woodlands. 



a. Sub-association of Fagus sylvatica. Transitional to IX. 



b. Sub-association of Qiiercits spp. 



c. Sub-association of Betula spp. 



d. Sub-association of Pinus sylvestris. 



e. Mixed woods. 



2. Associations of Scrub. 



3. Associations of Sandy Grassland. 



VI. The Plant Formation of Heaths. 



1. Association of Calluna vulgaru. 



b. Sub-association of Erica cinerea. 



2. Associations of Heath Moors. Transitional to XII. 



VII. The Plant Formation of the older Siliceous Soils. 



2 1. Association of Birch Woods (Betuletum pubescentis). 



1 2. Association of Oak Woods (Quercetum sessiliflorae). 



1 3. Associations of Scrub. 



J 4. Associations of Siliceous Grassland (e.g., Nardetum strictae ; 



Molinietum caeruleae). Molinieta are transitional to 



moors. 

 J 5. Associations of Swamps (e.g., Juncetum effusi). Transitional 



toX. 



