72 ALIEN FLORA OF BRITAIN 



[Potentilla fruticosa, L. Native, though very rarely,, 

 both in Ireland and England. More often recorded 

 as an alien due to garden cultivation.] 



Potentilla hirta, L. Native of stony places of Southern 

 Europe ; rather frequently recorded as a garden outcast 

 in England. 



Potentilla inclinata, Vill. Native of stony hills from 

 Eastern France through Southern Russia to Western 

 Asia. It has been recorded several times as a garden 

 outcast in England. 



Potentilla intermedia, L. A native of woods in 

 Central Europe, recorded once or twice presumably 

 as an outcast from gardens. 



Potentilla norvegica, L. Native of wet sandy places 

 in Europe, much cultivated in English gardens, and 

 often noticed as an escape from cultivation. In some 

 localities it is even said to be thoroughly established. 



Potentilla opaca, L. A native of the mountains from 

 Northern and Central Europe to the Altai region. It 

 was recorded by Don as a wild Scotch plant, but the 

 author of the Students' Flora states that Don's specimens 

 are referable to Potentilla intermedia. In either case 

 it would not be safe to accept the record as a native 

 one, as Don's discoveries have been questioned by so 

 many reliable botanists of subsequent times. Their 

 assumption is that some of his most remarkable dis- 

 coveries were introductions (whether intentional or not 

 need not here be discussed), and so they will find a 

 place in this list. 



