former Distribution of British Plants. 167 
CAREX ROSTRATA, Stokes. 
Neolithic :— 
Cowden Glen, Renfrewshire. 
Interglacial :— 
West Wittering, Sussex; Stone, Hampshire; Southelm- 
ham, Suffolk ; Hoxne, Suffolk (bed D) (?); Airdrie, Lanark. 
CAREX VESICARIA, L. 
Unknown fossil in Britain. 
Recorded from the Pine and Oak Zones in Sweden 
(Gunnar Andersson). 
PHRAGMITES COMMUNIS, Trin. 
Neolithic :— 
Thames Valley (common); Barry Docks, Glamorgan ; 
Kelsey Hill, Yorkshire. 
Interglacial :— 
Stone, Hants; West Wittering, Sussex; Kirmington, 
Lincolnshire. 
Preglacial (Cromer Forest-bed) :— 
Common nearly everywhere. 
Stems, leaves, or nodes of grass are common at most 
localities; but the only species in a determinable state 
appears to be Phragmites communis. Anthroxanthum 
odovratum, Holus lanatus, Poa trivialis, and Hordeum 
aistichum have all been recorded ; but in each case I think 
that the specimens are recent and do not belong to the 
deposit in which they are said to occur. Extreme care 
is needed to prevent the introduction of grass-seeds, which 
are dispersed by the wind and adhere to the surface of 
the clays containing the fossil plants. 
