86 THE STORY OF PLANT LIFE 



or of various grasses, such as Bent Grass, Vernal 

 Grass, Yorkshire Fog, Sieglijigia, Quaking Grass, etc. 



Where the fens adjoin the coast a sub-maritime 

 fen pasture association is formed. 



Moorlands are lowland or upland. The lowland 

 moors are found in the vicinity of estuarine and 

 lacustrine deposits where aquatic vegetation has 

 formerly flourished. 



There are associations of Cottongrass, with Scirptis 

 ccBSpitosus, Ling, Cross-leaved Heath, Wild Rosemary, 

 with Sphagnum in pools. Beak Sedge, Cranberry, 

 Bog Asphodel, Sundews. 



The succession is Sphagnum moor, Cottongrass 

 moor, Cottongrass-Heather moor. Heather moor, 

 Birch scrub, Birch thicket, Birch wood. With these 

 are marginal associations with Alder, Willow, and 

 other tree types, Bogbean, Marsh Cinquefoil, Panicled 

 Sedge, Reed, Water Violet, etc., Purple Moor Grass, 

 Ling, Sphagnum, etc., Cottongrass, Sweet Gale. 

 Peat, with fen peat below and moor peat above, is 

 formed to a depth of 12 — 15 ft. 



In the lacustrine moors the peat consists of lake 

 mud, shell marl, amorphous peat, Hypnum peat, 

 reed and sedge peat, wood peat. Sphagnum and 

 Eriophorum peat. 



The valley moors of the New Forest exhibit the 

 following succession : Alder thicket, Marsh forma- 

 tion. Reed-swamp association, Purple Moor Grass 

 association. Bog moss or moor formation. 



The upland moors consist of associations on thicker 



