186 VEGETATION OF THE PEAK DISTRICT (CH, 
footpaths, in typical examples of the association of Eriophorum 
vaginatum of the southern Pennines :— 
Dominant 
Eriophorum vaginatum 
Locally sub-dominant 
Molinia caerulea Eriophorum angustifolium 
Locally abundant 
Empetrum nigrum Vaccinium Myrtillus 
Erica Tetralix Scirpus caespitosus 
Calluna vulgaris Carex curta 
Local or rare 
Andromeda Polifolia Pinguicula vulgaris 
Vaccinium Oxycoccus Agrostis canina 
Narthecium ossifragum 
TRANSITIONAL ASSOCIATION OF COTTON-GRASS MooR AND 
SILICEOUS GRASSLAND 
It has been already stated that parts of the siliceous grassland 
show transitions to the heather moor: such places have a com- 
paratively dry soil. Some wet parts of the siliceous grassland 
show analogous transitions to the cotton-grass moor. This 
transitional association is characteristic of wet and stagnant 
hollows. The mat-grass (Nardus stricta) is less abundant here 
than on typical siliceous grassland; and the moor grass (Molina 
caerulea) is frequently conspicuous. Juncus squarrosus is someé- 
times very abundant ; but in all cases one or other of the two 
cotton-grasses, generally H. angustifoliwm, is the most prominent 
plant. Such areas in the Peak District are local in their dis- 
tribution. Perhaps the best of them occur between Hayfield 
and Chinley. The association probably represents a stage in 
the development of cotton-grass moor from siliceous grassland. 
On the vegetation maps, they are shown by printing the word 
“peat” on the colour used for siliceous grassland. 
