^loristic Composition of Heath Association 105 



places, several other species are found, but the Callunetum 

 IS a ways poor floristically as compared, for instance, with 

 ^'^^ ^^ass-heath association. 



J- he following is a general representative list for the 

 southern heaths. 



Dominant species. 

 Calluua vvilgaris 

 Erica cinerea 



(damper 



E. vagans (Cornwall only) 

 Vacoinium Myrtillus 



Erica Tetralix 

 peaty heaths) 



Viola Eiviuiana 



V. oanina (=V. ericeto- 

 rum) 



V. laetea 



Polygala serpyllaoea 



Hypericum pulchrum 



Linum catharticum 



Genista anglioa 



G. pilosa 



Ulex europsBus 



U. minor (mainly S. Eng- 

 land) 



TJ. Gallii (TV. and N. Eng- 

 land, Wales, Ireland) 



Cytisus seoparius 



Lotus corniculatus (agg.) 



Bubus spp. 



Potentilla erecta 



GaUum saxatile 



Senecio sylvaticus 



Cnicus pratensis 

 slum anglicum) 



Serratula tinctoria 



Wahlenbergia hederaoea 



The distribution of the common gorse (Ulex europseus) 

 h ths is of some interest. It does not appear to be 

 °^ ^-cal member of the Callunetum but rather belongs 

 r ^utral pasture and grass heath. It is very often 

 1° '^iv doiniQaii* along roadsides and by villages and 

 cottages 



( = Cir- 



and from such situations it invades typical 



