168 Origin of the British Flora. 
PTERIS AQUILINA, L. 
Though often stated to occur in a fossil state I have 
seen no undoubted specimens in Britain. 
Recorded from South Sweden (Gunnar Andersson). 
ATHYRIUM FILIX-FEEMINA, Roth. 
Unknown fossil in Britain. 
Recorded from the Oak Zone in Gotland (Gunnar 
Andersson). 
SCOLOPENDRIUM VULGARE, Sm. 
Found in calcareous tufa of doubtful age at Dursley, in 
Gloucestershire. : 
LASTR4&A THELYPTERIS, Presl. 
Unknown fossil in Britain. 
Recorded from the Oak and Spruce Zones in South 
Sweden (Gunnar Andersson); and from Klinge bei Cottbus, 
in Prussia (Carl Weber). 
OSMUNDA REGALIS, L. 
Neolithic :— 
‘Submerged forests’ near Liverpool. 
Preglacial (Cromer Forest-bed) :— 
Common at Mundesley, Norfolk; rare elsewhere. 
EQUISETUM PALUSTRE, L. 
Unknown fossil in Britain. 
Recorded from Honerdingen, in Hanover (Carl Weber). 
