106 III. INTRODUCED SPECIES. 



mostly explained by tlie different views on the compara- 

 tive value of the evidences or data, as set forth in the two 

 works. The instances are few, where aliens or colonists 

 of the Cybele are held natives by the Geographie ; or 

 where the natives of the Cybele are reduced to lower po- 

 sition in the Geographie ; although instances of each 

 kind do occur. 



It is likely that English botanists, while looking over 

 the list, will feel some surprise at the opinions of M. De 

 CandoUe in relation to the nativity or naturalisation of 

 several of the species. They will be reluctant to admit 

 his idea, that Anemone ranunculoides and Stachys gerina- 

 nica are more likely native here, than are Fedia olitoria 

 and Fumaria officinalis. They will scarcely concur with 

 him in holding that Papaver duhium and Raphanus Ra- 

 phanistrum are less entitled to be held naturalised spe- 

 cies, than are CEnothera biennis and Tragopogon porri- 

 folius ; all four being alike excluded from the native 

 category. A second list of the distrusted species, pre- 

 sently to be given, will enable readers to compare the 

 current opinions of various English botanists with those 

 evinced in the Cj^bele and the Geographie. That the 

 Author of the former dissents from the conclusions 

 arrived at by the Author of the Geographie, in several 

 instances, is sufficiently apparent from the preceding list. 

 For example, he cannot admit that Thlaspi arvense and 

 Barbarea pracox jjresent more appearance or probability 

 ' of being native, than do Rimiex pulcher and Linaria Ela- 

 tine ; though it is quite possible that these two latter are 

 properly deemed introduced plants ; the former of these 

 two having a very interrupted or scattered distribution 

 by road-sides, and the latter being chiefly limited to 

 worked ground. On the contrary, it is admitted that M. 

 De Candolle may have been more correct in removing 



