^ ALIEN FLORA OF BRITAIN 



VALERIANACE^. 



Centranthus Calcitrapa, Dufr. Native in stony places 

 in the Mediterranean region. Only known as a wild 

 plant in England, on old walls at Eltham in Kent^ 

 and formerly at Chelsea. In both these situations it is^ 

 believed to have originated from neighbouring gardens. 



Centrantlius ruber, DC. Native on rocks in Southern 

 Europe. Thoroughly naturalised in Southern England^ 

 near towns and villages. It has been found growing, 

 on cliffs and walls, always in more or less obvious 

 connection with neighbouring gardens. It seems to 

 have a less permanent footing in its more northerly 

 stations, and is hardly more than a casual north of 

 Birmingham. 



Valeriana pyrenaica, L. Native in shady valleys in the 

 Pyrenees. Naturalised in Scotland, originating, doubtless^ 

 from garden culture. 



[Valerianella carinata, Lois. Native of the Continent 

 of Europe as far as the north coast of Guernsey. There- 

 seems to be no sufBcient reason why it should not alsa 

 be considered native in England. There are six localities 

 on record where the species grows in the turf in 

 perfectly natural surroundings — exactly the habitat 

 affected by the plant in its more southern stations.. 

 There are numerous other records where the species, 

 is certainly a weed of cultivated ground.] 



Valerianella dentata, Pollich. Native of exposed 



