Plate VI 



Phot. S. JIaiiffhtutt 



a. Heath association invaded hy jfinus syh-esirts. Calluna rulparis, 

 Ulex europieus. Pool with Potamogeton polyiionifoUus and Sphagiuun 

 subsecundum surrounded by Juncus acutijiorus, J. effusus, etc. Near 

 Wych Cross, Ashdown Forest, on Ashdown sand. 



h Heath association invaded by subspontaneous Phitis sijleestris, same 



locality. 



Heath Formation. 



