APPENDIX II 



SUMMARY OF BRITISH PLANT FORMATIONS 

 AND ASSOCIATIONS 



I. The Plant Formation of Fresh Waters. 



A. The Sub-formation of Foul Waters. 



B. The Sub-formation of nearly Stagnant Waters (i.e., with no 



flood-currents). 



1. Associations of Submerged Plants (e.g., Chareta). 



2. Associations of Plants with Floating Leaves (e.g., Lemneta). 



2 3. Associations of Reed Swamps (e.g., Phragmitidetum vulgaris). 



C. The Sub-formation of Slowly-moving Water (with periodical 



flood-currents and rich in dissolved mineral salts). 

 2 1. Associations of Submerged Plants (e.g., Ranunculetum 



circinati). 

 2 2. Associations of Reed Swamps (e.g., Qlycerietum aquaticae). 



D. The Sub-formation of lake-margins, with well-aerated waters. 



E. The Sub-formation of Quickly-flowing Streams of hill and 



mountain slopes. 



1 1. Associations of Streams with Calcareous Waters. 



1 2. Associations of Streams with Non-calcareous Waters. 



F. The Sub-formation of Stagnant and Acidic Waters. 



II. The Plant Formation of Salt and Brackish Waters. 



1. Associations of Sea-weeds (e.g., Laminarietum digitatae). 



2. Associations of submerged Marine Flowering Plants (e.g., 



Zosteretum marinae). 



3. Associations of Marine and Tidal Reed Swamps (e.g., 



Spartineta). 



4. Associations of Brackish Waters (e.g., Ranunculetum bau- 



dotii). 



5. Associations of Brackish Reed Swamps (e.g., Scirpetum 



maritimi). 



1 Well represented in the Peak District. 



* Fairly well represented in the Peak District. 



