148 Origin of the British Flora. 



Also recorded from Sweden in the Birch, Pine, and 

 Oak Zones (Gunnar Andersson) ; and from Griinenthal, in 

 Holstein, associated with Brasenia (Carl Weber). 



Salix phylicifolia, L. 

 Unknown fossil in Britain. 



Recorded from Sweden in the Dryas (Late Glacial), and 

 Birch and Spruce (Neolithic) Zones (Gunnar Andersson). 



Salix nigricans, Sm. 



Unknown fossil in Britain. 



Recorded from Sweden in the Pine, Oak, and Spruce 

 Zones (Gunnar Andersson). 



Salix repens, L. 

 Neolithic : — 



Fenland (A. Bell); Barnwell, Cambridge; Cowden 

 Glen, Renfrewshire. 



Late Glacial : — 



Corstorphine, near Edinburgh ; Crianlarich, Perthshire. 



Also recorded from Klinge bei Cottbus in Prussia 

 (Carl Weber) ; and from Lauenburg an der Elbe (Keilhack). 

 In each case it is associated with Brasenia. 



Salix lanata, L. 

 Unknown fossil in Britain. 



Recorded from the Pine Zone in Norrland (Gunnar 

 Andersson). 



Salix Arbuscula, L. 

 Unknown fossil in Britain. 

 Recorded from Sweden in the Birch and Spruce Zones 



