128 ALIEN FLORA OF BRITAIN 



and Northern France. It is often recorded in Eng- 

 land, especially in the midland and southern counties, as 

 a weed in hedges and on roadsides. It has long been 

 cultivated for the sake of its edible roots, and it is 

 probably due to the size and durability of its rootstock 

 that it now appears in so many places in Britain, 

 though apparently not indigenous in the islands. 



Specularia hybrida, A. DC. Probably native on the 

 slopes of mountains in the Mediterranean region. In 

 other parts of Europe, including England, a more or less- 

 common cornfield weed. 



Specularia Speculum, A. DC. Probably native in the 

 Mediterranean region. Elsewhere on the Continent a 

 cornfield weed. It occurs in England in waste ground 

 as a grain introduction, as a garden escape, and 

 occasionally also as a weed introduced into arable 

 land with foreign seed. 



ERICACE^. 



[DabGecia polifolia, D. Don. Native on heaths in 

 Ireland, Western France, Portugal, and Northern Spain^ 

 It has been recorded from a few wild situations in 

 England, where it is known to have been planted.], 



Erica caruea, L. Native from Southern Germany and 

 Switzerland to the Orient. Recorded by Dr. Hance 

 from a heath near Newton Abbot, Devonshire. If 

 correctly named, it may doubtless be assumed to be 

 an introduction. 



