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 BOTANY of the former county affording a home for many additional species. To this category of ericetal and uliginal plants belong Ranunculus Lenormandi, Sagina subulata, Drosera rotundifolia (formerly grew on bogs in Oxfordshire but now extirpated by drainage), D. longifolia (D. intermedia], Hypochceris glabra, Gentiana Pneumonantbe, Myosotis repens, Illecebrum iierticillatum, Myrica Gale, Narthecium ossifragum, Scirpus ctzspitosus, Carex elongata, C. elata (C. stricta=C. Hudsonii], C. Icevigata, Agrostis setacea, Osmunda, Pbegopteris polypodioides, Pilularia globulifera and Lycopodium inundatum. Arnoseris, which is a plant sometimes found in sandy cornfields recently reclaimed from heath vegetation, is another interesting species. A few maritime or semi-maritime species occur in a meadow near Marcham, in which there is a saline spring, namely Buda media, Juncus Gerardi, Scirpus maritimus and Zannicbellia pedicellata. We have also Tunica prolifera (Diantbus prolifer], Stellaria umbrosa, Fumaria muralis, Elatine hexandra, E. Hydropiper, Impatiens bijiora, Myriopbyllum alternifolium, Epilobium lanceo- latum, Cer-vicina (Wahlenbergia) bederacea, Utricularia minor, Verbascum Lycbnitis, Erigeron canadense, Myosotis syhatica, Polygonum dumetorum, Crocus vernus, Ornitbogalum pyrenaicum, Allium oleraceum, Potamogeton Drucei, P. obtusifolius, P. coloratus, Carex Bcenningbausiana, Apera Spica- venti, Poa Cbaixii, Tolypella glomerata and Nitella translucens. The bramble flora of Berks is also very rich, and Rubus sulcatus, R. nessensis (R, suberectus), R. Colemanni, R. lentiginosus, R. mercicus var. bracteatus, R. Questierii and several others with the above species are not recorded for Oxfordshire. I may also state that the following species which have been recorded for Oxfordshire have now either become extinct through drain- age and cultivation or are so rare as to have eluded my observation in that county, although I have found them in Berkshire, namely Anemone Pul- satilla, Ranunculus sardous (R. hirsutus], Dianthus Armeria, Viola palustris, Trifolium subterraneum, Potentilla argentea, Carduus pycnocephalus (C. tenui- ftorus], Pulicaria vu/garis, Gentiana campestris, Ecbinodorus ranunculoides, Carex strigosa, Juncus squarrosus, Salix repens, Equisetum syhaticum, Ryncbospora alba, Cerastium quaternellum (Mcencbia), Dryopteris montana (Lastrea Oreop- teris], Herminium, Orobanche Rapum-genistez and Teucrium Scordium. There are several species which are extremely rare in Oxfordshire, being confined to a few localities, but have a much wider range and are much more abundant in Berkshire, and these give a different aspect to the country in which they grow, especially the ericetal species such as Vaccinium Myrtillus, Erica cinerea, E. Tetralix, Calluna, Scutellaria minor, Genista anglka, Molinia varia, Carex binervis and Solidago Virgaurea, Other heath loving species are Centunculus, Millegrana, Scirpus fluitans, Viola lactea, Antbemis nobilis, Plantago Coronopus, Rhamnus Frangula, Nardus stricta and Potamogeton polygonifolius. The Solomon's seal (Poly- gonatum multiflorum) is very rare in Oxfordshire but is widely distributed, and a very beautiful feature in the woods of the centre and south of Berkshire, and the pendulous sedge (Carex pendula] is abundant in Wytham Woods in the north of the county. The beautiful snowflake (Leucojum cestivum) is an example of a riverside species which is more 37