IV] 



GRASSLAND ASSOCIATIONS 



119 



Verbascum Thapsus 

 Plantago media 

 Asperula cynanchica 

 Galium sylvestre 

 Scabiosa Columbaria 

 Campanula glomerata 

 Pulicaria dysenterica 

 Inula squaiTosa 

 Senecio erucifolius 

 Picris hieracioides 

 Leontodon hirtus 

 Hieracium spp. 



2. In rocky places, parti 



Asplenium viride 



A, Trichomones 



A. Adiantum-nigrum 



A. Ruta-muraria 



Cystopteris fragilis 



Thalictrum minus 



Draba muralis 



Sedum Telephium 



" Saxifraga sphonhemica " 



S. hypnoides 



Rosa spinosissima 



Avena pratensis 

 A. pubescens 

 Koeleria cristata (agg.) 

 " Bromus erectus " 

 Brachypodium pinnatum 

 Carex ornithopoda 

 Ophrys apifera 

 " O. muscifera " 

 Orchis morio 

 O. ustulata 

 O. pyramidalis 



cularly where sheltered 



Geranium lucidum 

 Q. sanguineum 

 Hypericum montanum 

 Pimpinella magna 

 Satureia Acinos 

 Galium asperum 

 Valerianella carinata 

 V. olitoria 

 Centaurea Scabiosa 

 Allium vineale 

 A. oleraceum 



3. In places, where the soil is loose, all semi-ruderal 

 plants, occurring, as a rule, most abundantly on the refuse- 

 heaps ("rakes") of old lead-mines or modern gravel- workings : — 



Arenaria verna 

 A. serpyllifolia 

 Cardamine hirsuta 

 Cochlearia alpina 

 Hutchinsea petraea 

 Arabis hirsuta 

 Sisymbrium Thalianum 

 Erophila verna 

 var. virescens 

 E. praecox 

 "E. inflata" 



Thlaspi virens 

 " T. sylvestre " 

 Saxifraga tridactylites 

 Alchemilla arvensis 

 Viola lutea 



var. amoena 

 V. calaminaria 

 Myosotis coUina 

 Sherardia arvensis 

 Carduus nutans 

 Cnicus eriophorus 



From the above lists, it will be seen that calcareous grass- 

 land differs greatly from siliceous grassland not only in the 

 soil conditions but also in the floristic composition. In my 

 judgment, the edaphic characteristics of the habitats are so 

 essentially different that the two types of grassland, siliceous 



