INTRODUCTION. 23 



se fixit de I'e.spece line idee tout autre que I'observateur 

 place au milieu des champs. II se forme de chaque espece 

 un type ideal plus au moins large, salon le nombre et les 

 etats des specimens qu'il a pu voir dans les lierbiers." 

 L^ Etude specifique du genus Ruhus. 



In the attempt that is made to point out the geographi- 

 cal distribution of the species I have been obliged to trust 

 chiefly to my own collection for information; for in the 

 present uncertain state of the nomenclature of brambles it is 

 not advisable to accept the names given even by the best 

 botanists. The tables show the presence of the several 

 species in certain parts of the country; but do not, and 

 cannot, point out their abundance or rarity in any place. 

 This is an unfortunate circumstance, for, as has been already 

 indicated, much depends upon it. In illustration : R. dis- 

 color and R. Radula are equally marked as natives of 

 Prov. III. Ouse and county of Cambridge. The former is 

 exceedingly abundant ; the latter has only been found in one 

 place. It seems probable that one or more of the species 

 constitutes the prevalent bramble, the Blackberry, of each 

 district. R. discolor, which is very common in many parts 

 of the kingdom — so abundant as to attract notice almost 

 exclusively to itself — is superseded by another kind in some 

 places, where it may be and probably is present, but escapes 

 general notice. R. diversifolius is so abundant in the valley 

 of the Severn at and for a long distance above Shrewsbury, 

 and A*, pyramidalis and R. inciirvatus at Llanberis, as to be 

 noticed by any observant person ; but R. discolor is not seen 

 except by the botanist who is familiar with brambles. 



The eighteen Provinces into which Mr H. C. Watson 

 divided Great Britain, and which are used in his Cyhele 



