THE FYLDE : PHYTOGEOGRAPHY 



23 



Area IV. 



The more typical undrained portions of Cockerham Moss, the average 

 elevation of which is 30 feet, are not unlike the great red bogs overlying the 

 Irish glacial material. The northern side, approximately one mile from the 

 sea, is more attractive to the botanist, much of it being pure sphagnum bog, 

 quaking underfoot as in Ireland. Here one finds : — 



Drosera rotundifolia 

 Drosera anglica .... 

 Vaccinium oxycoccus 

 Andromeda polyfolia 

 Erica tetralix 

 Narthecium ossifragum.. 

 Eriophorum vaginatum. 

 Rhynchospora alba 

 Carex canescens... 

 Carex limosa 

 Molinia coerulea 



Round-leaved Sundew. 



English Sundew. 



Cranberry. 



Marsh Andromeda. 



Cross- leaved Heath. 



Bog Asphodel. 



Sheathing Cotton Grass. 



White Beak Sedge. 



Whitish Sedge. 



Mud Sedge. 



Purple Molinia. 



And where the surface is drier and more uneven 



Rubus plicatus .... 

 Calluna vulgaris 

 Melampyrum pratense .... 

 Betula pubescens 

 Salix cinerea 

 Myrica gale 

 Empelrum nigrum 

 Orchis latifolia .... 

 Juncus bulbosus.... 

 Eriophorum polystachion 

 Lastrea spinulosa 



Plicate Bramble. 



Ling. 



Crested Cow Wheat. 



Common Birch. 



Grey Sallow. 



Sweet Gale. 



Crowberry. 



Marsh Orchis. 



Bulbous Buttercup. 



Common Cotton Grass. 



Broad Shield Fern. 



The middle Wyre floods, and has artificially-strengthened banks, but 

 the cliffs of the lower course are natural. At Shard Bridge the Upper Drift 

 of yellow-brown clay forms the 35 feet northern bank, and supports small 

 plantations ; the south bank is formed by Upper Boulder Clay. A tidal 

 flat below the cliffs supports the following : — 



Cochlearia anglica 

 Brassica monensis 

 Aster Tripolium... 

 Tanacetum vulgare 

 Artemisia maritima 

 Limonium Vulgare 

 Limonium humile 

 Limonium binervosum 

 Atriplex littoralis 

 Atriplex deltoidea 

 Atriplex Babingtonii 

 Atriplex laciniata 

 Obione portulacoides 



English Scurvy Grass. 



Isle of Man Cabbage. 



Sea Aster. 



Tansy. 



Sea Artemisia. 



Sea Lavender. 



Bi-nerved Sea Lavender. 

 Maritime Orache. 



Frosted Orache. 

 Sea Purslane. 



