Former Distribution of British Plants. 113 
; ACER CAMPESTRE, L. 
Neolithic :— 
Crossness, Essex (upper and lower peats). 
Preglacial (Cromer Forest-bed)—: 
Pakefield, Suffolk. 
Also recorded from the Oak Zone in Sweden (Gunnar 
Andersson); and from Fahrenkrug, in Holstein, and 
Klinge bei Cottbus, in Prussia (associated with Brasenza) 
(C. Weber). 
ACER MONSPESSULANUM, L. 
Interglacial :— 
Stone, Hampshire ; Selsey, Sussex. 
This maple lives throughout the Mediterranean region 
and extends into central Europe ; it grows well in gardens 
in the South of England and seeds freely. 
ACER PLATANOIDES, L. 
Recorded by Gunnar Andersson from the Oak Zone in 
South Sweden; and by Keilhack from Lauenburg an der 
Elbe, associated with Brasenia. It has not been found in 
Britain. 
PRUNUS SPINOSA, L. 
Neolithic:— 
Crossness, Essex (upper and lower peats); North- 
ampton ; Hailes, near Edinburgh, 
Interglacial :— 
Hitchin, Hertfordshire ; West Wittering, Sussex. 
Preglacial (Cromer Forest-bed) :— 
West Runton, Overstrand, Happisburgh (Norfolk), 
Pakefield, Suffolk. 
