The Humtanton Flora 237 



(Glaucium Jtavum. 

 Deep-rooted \Eryngium r/V/*/i. 



Intermediate. Silene maritima. 



(Arenaria peploides. 



Tri folium scabrum. 

 Shallow-rooted. 4 ' . . 



T. stnatum. 



[Pkkum arenarium\ 



The Cliff. 



The cliff flora calls for hardly any notice. Wallflower, 

 probably self-sown, is not uncommon on the cliff' face ; and 

 fringing the edge is a great quantity of Smyrnium olusatrum. 



The Sand Hills. 



The sand hill flora consists of three sections. 



1. Annuals which exist outside the area where the sand 

 is held in check. Cakile maritima and Salsola kali are the 

 most important. 



2. The area where the movement of the sand by the 

 wind is partially checked by the presence of some binding 

 plants. 



The principal binders are : 



(1) Ammophila arundlnacea. 



(2) Carex arenaria. 



(3) Elymus arenarius. 



The first two are by far the most important. Protected 

 by these plants are 



Arenaria peploides. 

 Erodium cicutarium. 

 Volvulus Soldanella. 

 Phleum arenarium. 



On the eastern side, protected from the wind, Lactuca virosa 

 is abundant. 



3. The region where no sand is in motion and the 

 binders have given place to short turf the links. 



1 Pli. arenarium rare on stones. 



