postelsia 21 



a. Large open beach. 



Along the front border of the large open 

 beaches, the association of plants almost un- 

 iversally met with is composed of the following 

 species :- 



J uncus lescurii Argentina anserina grandis 

 Ammodenia major Trijolium heterodon 



This region of the beach is subjected to 

 occasional flooding by high waves even in sum- 

 mer, and during the frequent winter storms 

 bears repeated inundation. 



Farther back upon what might w^ell be termed 

 the driftwood area of the beach, the vegetation 

 consists of a mixed society of so-called weeds. 

 The seeds of these hardy plants at first carried 

 in by various agencies, have found lodgment in 

 the tangle of logs and debris and it is largely 

 through the aid of this barrier that a vigorous 

 association has been built up and flourishes. 

 The species most commonly established over 

 such an area are:- 



Elymus mollis Chamaenerion angustijoliiim 



Festuca jonesii Conioselinum gmelini 



Br omits secalinus Galium aparine 



