INTRODUCTION xH 



stead Plain and Sunningdale Station are Bracklesham Beds. The 

 elevated ground of Caesar's Camp, Wickham Bushes, Easthampstead 

 Plain, Tower Hill, &c., belong to the Upper Bagshot Sands and are 

 often covered with pebble drift. In the Windsor district the Lower 

 Bagshot Beds occur about Cranbourn Lodge ; in Cranbourn Wood the 

 stream has cut through them to the London Clay. The Bagshot Beds 

 are also seen at Park Place, Cumberland Lodge, Cooper's Hill, &c. 

 The outlier at Farley Hill has the junction with the London Clay 

 shown by a series of springs. 



A very interesting flora occurs on the great tract of heathlands, 

 pinewoods, numerous and rather extensive bogs, and open commons 

 "which is formed of the Bagshot Beds. 



The dry gravelly commons produce Cerastium quafernellum. Erica 

 cinerea, Calluna, Stellaria graminea. Cerastium arvense, Hypericum pulchrum, 

 H. humifusum, Hieraciwn horeale, H. umbellatum, H. sciaphVum, H. rigiclum, 

 (var.) Enjthraea CentaKrium, Hypochoeris glabra, Teesdalia nudicaulis, Filago 

 minima, Gnaphalium sylvaticum, Anthemis nobilis, Myosotis cellina and M. 

 versicolor, Malta moschata, Aira caryophyUea, A. praecox, Cytisus scoparius, 

 Genista anglica, Trifolium arvense, T. striatum, T. filiforme, Viola canina, Carex 

 binervis, C. piluHfera, C. praecox, C. leporina, Juncoides midtiflora, Molinia, 

 Poientilla procumbens, P. argentea, Bosa rubiginosa, R. micraniha, a large 

 number of Rubi, Trigonella, Ulex {nanus) minor, Cuscuta Epithymum, 

 Teucrium Scorodonia, Bumex Acetosella, Plantago Coronopus, Galium her cynicum, 

 Trifolium filiforme, Centimcidus, Millegrana, Agrostis sefacea, Genista tinctoria, 

 Le2)idium h.eterophyUum, var. canescens, Viola lactea, Nardus stricta, Agrostis 

 canina, Inula Conyza, Epilobium lanceolatum, Jasione, and Filago apiculata. 



In the more wooded country will be found Sedum Telephium, Vaccinium, 

 Pyrola minor, Capnoides claviculata, Epipactis latifolia, Polygonatum multiflormn, 

 Lathyrus moyitanus, Melampyrum pratense, Dryopteris dilatata, D. spimdosa, 

 D. montana, Polystichum angidare, P. aculeatum, Blechnum, Athyrium Filix- 

 foemina, Phegopteris polyjiodioides, Stellaria umbrosa, Polygoyxum dumetorum, 

 Campanida Bapuncidus, &c. 



The bogs and ponds which are scattered over the area yield Viola 

 X)alustris, Banuncidus Lenormandi, Stellaria uliginosa, Montia, Hypericum, 

 elodes, BJiamnus Frangula, Peplis, Chrysosplenium oppositifolium, Apium inun- 

 datum, Hydrocotyle, Potentilla palustris, Brosera longifolia. B. rotundifolia, 

 Bidens cernua, Menyanthes, Myosotis caespitosa, M. repens, Mtjrica Gale, 

 Molinia, Carex flava, C. echinata, C. canescens, C. pidicaris, C. dioica, C. 

 rostrata, C. Pseudo-cyperus, Potamogeton alpinus, P. polygonifolius Scutellaria 

 minor, Cnicus pratensis, Vahriana dioica, Gentiana Pneanomanthe, Karthecium, 

 Epilobium palustre, Bynchospora, Schoenus, Scirpus caespitosa, S. x>aucifiorus, S. 

 Jluitans, Eriophorum angustifolium, Blecebrum verticillatum, Pilularia, Oenanthe 

 crocata, Erica Tetralix, Lycopodium inundatum, Nitella iranslucens, N. opaca, 

 Charafragilis, Juncus bulbosus {supinus), J. squarrosus, Veronica scutellata, &c. 



