126 Origin of the British Flora. 



Preglacial (Cromer Forest-bed) : — 



Happisburgh, Norfolk ; Pakefield, Suffolk. 



Sambucus nigra, L 

 Roman Period : — 



Silchester, Hampshire. 



Neolithic : — 



Southampton Docks (peat below sea-level) ; Crossness, 

 Essex (upper and lower peats); Northampton (old river- 

 bed) ; Hailes, near Edinburgh ; Redhall, near Edinburgh ; 

 Fillyside, near Edinburgh (in raised beach). 



Late Glacial : — 



Hoxne, Suffolk (bed C — perhaps derivative from bed D). 



Interglacial : — 



West Wittering, Sussex ; Hitchin, Hertfordshire ; 

 Hoxne, Suffolk (bed D). 



Viburnum Opulus, L. 

 Neolithic : — 



Crossness, Essex (upper and lower peatsj. 



Interglacial : — 



West Wittering, Sussex. 



Viburnum Lantana, Linn. 

 Interglacial : — 



West Wittering, Sussex. 



Galium boreale, L. 

 Early Glacial: — 



Beeston, Norfolk (one badly preserved fruit of Galium 

 perhaps belongs to this species). 



