Former Distribution of British Plants. loi 



Thalictrum minus, L. 

 Late Glacial: — 



Hailes, near Edinburgh, associated with Salix polaris 



Early Glacial: — 



Beeston, Norfolk (base of Arctic Freshwater bed). 



Two small sharp-ribbed fruits have been found at 

 Hailes and are doubtfully referred to this species. Two 

 small fruits from Beeston, the one oval the other elongated, 

 sharp-ribbed and obscurely stalked, may also be referred to 

 T. mimis. In each case the fruits are considerably smaller 

 than my recent specimens. 



Thalictrum flavum, L. 

 Roman Period : — 



Silchester, Hampshire. 

 Interglacial: — 



West Wittering, Sussex ; Southelmham, Suffolk. 

 Preglacial (Cromer Forest-bed): — 



Beeston, Sidestrand, Mundesley, Ostend ( Norfolk ) ; 

 Gorton, Pakefield (Suffolk). 



Also at Honerdingen in Hanover (Carl Weber) ; Klinge 

 bei Cottbus, Prussia, where it is associated with Brasenia^ 

 Najas marina, &c. ; and in the Pine Zone (Neolithic ?) in 

 Sweden (Gunnar Andersson). 



Ranunculus aquatilis, L. 

 Neolithic: — 



Kelsey Hill, Yorkshire ; lacustrine deposits of the 

 Scottish Lowlands at Redhall, Hailes, Broughton, Elie, 

 and Cowden Glen ; Megaceros-marl of Ireland. 



