DISTRIBUTION IN BRITAIN. 185 



EXPLANATIONS OF APPENDIX NO. I. 



The Table is intended to exhibit several points relating 

 to the distribution of plants within Britain, which can be 

 shown in this form most conveniently and with least 

 repetition. 



The 1st column contains the names of reputed species, 

 native or in some measure naturalised ; omitting several 

 of those usually introduced into British Floras, but which 

 are either peculiar to adjacent islands not within the 

 scope of the present work, or are presumed to be now 

 extinct, if ever really found wild in Britain. The nomen- 

 clature is almost invariably that of Hookers British 

 Flora, second and third editions. This mark (°) signifies 

 the species to be scarcely wild in Britain, and no doubt 

 introduced. The star (*) indicates a species generally 

 supposed to have been introduced, but now to some 

 extent established. The dagger (f ) shows a species more 

 or less strongly suspected to be in the like circumstance, 

 although now occurring spontaneously. And this mark 

 (X) distinguishes such as may possibly have been in- 

 troduced, being weeds of cultivated ground or inhabited 

 places. (See the remarks of Prof. Henslow, in the Maga- 

 zine of Natural History, vol. viii. p. 84.) Names of 

 of nearly allied forms, which it appears more expedient to 

 unite as varieties, are joined by a bracket. 



The 2d column denotes the range of latitude over 

 which the species is reported to extend, although in divers 

 instances not indigenous over the whole space indicated. 

 An alleged greater extension, the accuracy of which there 

 appears reason for questioning, is distinguished by the 

 figures within ( ) following the specific name. All the 

 plants of Orkney are given under the 59th degree, and 



