VEGETATION OF THE MARSH AND BOG 247 



latus, J. obtusiflorus, etc.) or sedges. These plants often 

 grow thickly to the exclusion of all others. In the more 

 open parts some plants found also in the marsh occur 

 e.g., Ranunculus Flammula, Comarum palustre, Hydro- 

 cotyle, Stellar ia uliginosa, Anagallis tenella, Menyanthes 

 trifoliata, Parnassia palustris, Orchis latifolia, etc. But 

 many others characteristic of sour soil are abundant 

 e.g., sundews, butterworts, V actinium Oxy coccus (cran- 

 berry), Andromeda polifolia, Erica Tetralix, Salix repens, 

 NartJiecium ossifragum (bog-asphodel), Selaginella selagi- 

 noides, Molinia ccerulea, etc. 



The relation between the marsh-land and aquatic 

 vegetation is shown in the following diagrams : 



1. In the Lowlands: 



Associations of aquatic 



plants in still water. Woodland-swamp. 



Heed-swamp. 



Associations of Damp meadow. Marsh, 



aquatic plants in | 



slowly-moving j j 



water. Artificial meadow Bog. 



or pasture. 



2. In the Highlands : 



