Former Distribution of British Plants. 141 



Interglacial : — 



Hoxne, Suffolk (bed D) ; West Wittering, Sussex. 

 Preglacial (Cromer Forest-bed) : — 



Sidestrand, Norfolk (?). 



RUMEX Hydrolapathum, Huds. 



Unknown fossil in Britain. 



Recorded from the Pine and Oak Zones (Neolithic) in 

 Gotland (Gunnar Andersson). 



RUMEX ACETOSELLA, L. 

 Interglacial : — 



Hoxne, Suffolk (bed D) (?). 



Preglacial (Cromer Forest-bed) : — 



Beeston, Norfolk. 



It is noteworthy that our two aquatic docks, R. 

 aquaticus and R. Hydrolapathum^ are still missing in the 

 fossil state in Britain. 



HiPPOPHAE RHAMNOIDES, L. 

 Unknown fossil in Britain. 



Recorded from Norrland in Sweden in calcareous 

 tufa (Nathprst), and from Gotland (Gunnar Andersson). 



VTSCUM ALBUM, L. 



Unknown fossil in Britain. 



Recorded from the Oak Zone (Neolithic) in Gotland 

 (Gunnar Andersson). 



Euphorbia Helioscopia, L. 

 Neolithic: — 



Redhall, near Edinburgh, with weeds of cultivation. 



