SUMMARY. 
The Native plants of Oxfordshire number 818 species :— 
Denizens a : a - 49 » 
Colonists ‘ . * 43» 
Total . gio , 
Extinct . A : e i came 
Ambiguities and Errors « 5O- 
Casuals and Aliens P » 169 3 
About 310 Varieties have also been noticed. 
The extinct species are Ranunculus Sardous, Genista anglica, Drosera, 
Hypericum Elodes, Trigonella, Myriophyllum alterniflorum, Tordylium, 
Asarum, Leucojum vernum, Eriophorum vaginatum, Phlewm paniculatum, 
Bromus madritensis, Asplenium lanceolatum, Lycopodium Selago, Equise- 
tum syloaticum, Arabis Turrita, Leonurus. Of the above 7 were natives, 
the others being doubtfully named or introductions. 
The ambiguities are Cardamine impatiens, Viola lutea, Campanula 
latifolia, C. patula, Salix ambigua, S. acuminata, Potamogeton gramineus 
(heterophyllus), P. obtusifolius, Aceras anthropophora, Allium oleraceum, 
Carex Oederi, CO. stricta, C. teretiuscula, Scrophularia vernalis, Senecio 
viscosus, Hieracitwm murorum, Chenopodium ficifolium. 
Plants which have become very rare with us and which I have not 
personally seen in the county are Anemone Pulsatilla, Adonis, Sisymbrium 
Sophia, Viola palustris, Moenchia, Tilia platyphyllos, Astragalus danicus, 
Potentilla argentea, Rosa sepium, Cotyledon, Cicuta, Gnaphalium dioieum, 
Pulicaria vulgaris, Crepis fetida, Jasione, Vaccinium Myrtillus, Gentiana 
campestris, Limosella, Teucrium Scordium, Plantago Coronopus, Chenopo- 
dium ficifolium, C. urbicum, Euphorbia platyphyllos, Salix repens, Potamo- 
geton rufescens, Alisma ranunculoides, Herminium, Juncus squarrosus, 
Carex strigosa, Oreopteris, Lycopodium clavatum. 
In vol. iv. of The Cybele the number of species for the whole of Great 
Britain is reckoned as 1425. Adopting for the purpose of comparison the 
same specific limits, we have in Oxford 854 species of the following ‘types 
of distribution.” Vide Comp. Cyb. vol. iv. pp. 399-519, and Comp. Cyb. 
23-32. 
oe Great Britain. Oxford. 
British 532 469 
English 409 308 
Intermediate 37 8 
Scottish 81 7 
Highland 120 
Germanic 127 51 
Local or doubtful 49 9 
