APPENDIX I 



217 



4. THE RELATIONSHIPS OF THE OXODION AND 

 THE SILICION 



[Sub-Alpine Grassland] 



Bilberry Moor 



} SILICION ' 



Bare Peat 



Heather and 



Retrogressive Moor 



t 



Cotton-grass Moor 



t 



Cotton-grass and Heather Moor 

 /* 



Heather Moor- 



Molinia Grassland or Moor 



Bilberry Moor 



\ 



Nardua Grassland 

 with much Heather 



Nardus Grassland 



I 



Oak and Birch Scrub 

 Oak or Birch wood 



> OXODION 



V SILICION 



5. THE PLANT FORMATION OF FRESH WATERS 



1. Associations of rapidly flowing non-calcareous waters. 



2. Associations of rapidly flowing calcareous waters. 



3. Associations of moving waters. 



4. Associations of stagnant waters. 



5. Associations of reed swamps. 



