APPENDIX II 219 



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



1. Associations of open Salt Marshes (Salicomietum europaeae; 



S. ramosissimae). 



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



Staticetum maritimae). 



3. Association of salt marsh gi-assland {e.g., Glycerietum mari- 



timae). 



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



cetum 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 Dimes {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 Fagtis sylvatica. Transitional to IX. 

 6. Sub-association of Querents spp. 



c. Sub-association of Betula spp. 



d. Sub-association of Pimis sylvestrii. 



e. Mixed woods. 



2. Associations of Scrub. 



3. Associations of Sandy Grassland. 



VI. The Plant Formation of Heaths. 



1. Association of Calluna vulgaris. 



b. Sub-association of Erica cinerea. 



2. Associations of Heath Moors. Transitional to XII. 



VII. The Plant Formation of the older Siliceous Soils. 



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



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



^ 3. Associations of Scrub. 



^4. Associations of Siliceous Grassland {e.g., Nardetum strictae ; 



Molinietum caeruleae). Molinieta are transitional to 



moors. 

 ^5. Associations of Swamps (e.^r., Juncetum eflfusi). Transitional 



toX. 



