XXX FLORA OF BERKSHIRE 



conspicuous objects in its dyke flora. Lathyrus XissoHa is found on it 

 or at its junction with tlie Corallian Beds. The woodland district, 

 which is not of large extent, includes however Bagley Wood, where 

 Cervicina {Wahhnhergia) hedtracea, Equisetwn syhaticum, Drosera, Convallaria, 

 Narcissus Pseudo-narcissus, Ranunculus par vi/lor us, Calamintha parviflora, and 

 many forms of Brambles are found. The flora of the Kimeridge Clay 

 is considerably modified by the drift deposits of high-level gravel?, 

 which are found on Wytham and Cumnor Hills, in Bagley Wood, and 

 about Abingdon. Among the more interesting plants which have 

 been found on this formation, in addition to those already referred to, 

 may be mentioned Ranuncidus trichophyllus, Thalictrum Jlavum, Roripa 

 sylvestris, R. amphibia, R. pulustris, Viola pahistris, Parnassia, Saponariay 

 Stellaria palustris, Sagina nodosa, Geranium pratense, Rubus Jissus, and other 

 species of Rubus, Pyrus torminalis, Epilobium angustifolium, E. tetragonwn, 

 E. palustie, Chrysosplenium, Galium idiginosum, Valeriana dioica, Cnicus 

 pratensis, Campanula Trachelium, Vaccinium Myrtillus, Cynoglossum officinale, 

 Hyoscyamus, Veronica montana, V. scutellata, Pedtcularis sylvatica, Melampyrum 

 pratense, Verbena, Lamium Galeobdolon, Calamintha montana, Samolus, Cheno- 

 podium rubrum, C. hybriclum, C. Vulvaria. Polygonum minus, P. mite, Neottia 

 Nidus-avis, Orchis morio, 0. incarnata, 0. latifolia, Habenaria chloroleuca, 

 Iris foetidissima, Paris quadrifolia, Juncus obtusiflorus, J. compressus, Scirpus 

 caricis, S. paucijlorus, S. sylvaticus, S. setaceus, Eleocharis midticatdis, Carex 

 acuta, C. pendula, C. fulva, C. Jiava, C. distans, C. pihdifera, C. disticha, 

 C. palJescens, C. panicea, C. leporina, C. echinata, C. axillaris, C. paniculata, 



C. pidicaris, C. dioica, Calamagrcsiis epigeios, Milium, Melica unijlora, Sieglingia, 

 Catabrosa, Agropyron caninum, Equisetum maximum, E. syhaticum, E. palustre, 

 Blechnum, Asplenium Ruta-muraria. Cetei-ach, Dryojoteris spinulosa, D. dilatata, 



D. montana, Botrychium, Ophioglossum, and formerly Narthecium ossifragum. 

 A locality of special interest in the Kimeridge Clay area is a 



detached patch forming the meadows near Marcham. In these 

 meadows a spring rises from the juncture of the Kimeridge Clay with 

 the Coralline Oolite, and its water is loaded with a considerable per- 

 centage of chloride of sodium. The water is sufficiently saline to 

 exert a considerable influence upon the surrounding vegetation. Here 

 may be found such maritime or semi-maritime plants as Scirpus mari- 

 iimus, Buda marina, Carex distans, Juncus Gerardi, Oenanthe Lachenalii, 

 Zannichellia peduncidata, Apium graveolens, Vaucheiia dichotoma, var. suh- 

 marina. A form of Atriplex deltoidea, of Agrostis alba, and of Polygonum 

 aviculare, which resemble the marine forms, also occur. 



At Chawley Hurst the Kimeridge Clay is extensively excavated for 

 brick-making, and this industry threatens the fir-capped Hurst. 

 Brickyards in this formation are also found on the south and west 

 side of Boar's Hill, where Lathyrus sylvestris occurs in considerable 

 quantity. 



