VIl] 



MOORLAND ASSOCIATIONS 



171 



Of these species, only Molinia caerulea and perhaps Scirpus 

 caespitosus occur in the fen formation of Cambridgeshire. 



5. The following species also occur (or formerly occurred) 

 in the fens of East Anglia : those that are local or very rare 

 are marked by an obelisk : — 



Lathyrus palustris 

 t Viola stagnina 

 tV. montana 



Peucedanum palustre 

 f Seliniim caruifolium 

 t Senecio palustris 

 t S. paludosus 

 t Sonchus palustris 



Potamogeton plantagineus 



Carex disticha 



C. paradoxa 

 C. lasiocarpa 

 C. lepidocarpa 

 C. pseudo-Cyperus 

 Calamagrostis Epigejos 



t Luzula pallescens 

 Orchis incarnata 

 Epipactis palustris 

 Habenaria conopsea 



t Liparis Loisellii 



The following plants are characteristic of British moors, 

 and are all common or fairly common plants : — 



Lycopodium Selago 

 Blechnum spicant 

 Viola palustris 

 Drosera sp^j. 

 Galium saxatile 

 Arctostaphylos spp. 

 Vaccinium Oxycoccus 

 Andromeda Polifolia 

 Myosotis repens 

 Pedicularis sylvatica 

 Potamogeton polygonifolius 



Rhyncospora alba 

 Carex curta 

 C. echinata 

 C. binervis 

 Agrostis canina 

 Nardus stricta 

 Deschampsia flexuosa 

 Luzula multiflora 

 Narthecium ossifragum 

 Listera cordata 

 Orchis ericetorum 



An opinion which is held by many geologists and others to 

 the effect that moor peat is generally composed of Sphagnum- 

 moss and fen peat of Hypnum-moss is not supported by an 

 examination of the plant remains preserved in the peat. 



Certain types of vegetation, intermediate in various respects 

 betw^een moor and fen, require further study. They are usually 

 characterized by the presence of some of the following species : — 



Myrica Gale 

 Ranunculus Lingua 

 Potentilla Comarum 

 Pamassia palustris 

 Anagallis tenella 

 Menyanthes trifoliata 

 Veronica scutellata 



Pedicularis palustris 

 Schoenus nigricans 

 Triglochin palustre 

 Eleocharis acicularis 

 Scirpus pauciflorus 

 Eriophoi-um latifolium 

 Orchis latifolia 



