In the west of Ireland and in the Faroes, where certain inland and lowland localities are still uncultivated, Plantage maritfma and other halophytes occur in quantity and side by side with some Alpine species, such as Dryas octopetala.
This was not confined to the north but may occur on the mountains of England and Wales: Salix herbacea, Silene acaulis and Dryas octopetala will serve as examples.
Characteristic representatives are Pa paver nudicaule, Saicifraga oppositifolia, which forms a profuse carpet, and Dryas octopetal,a.
The following circumpolar species are common, and widely diffused throughout the whole of the Alps: Silene acaulis, Dryas octopetala, Saxifraga oppositifolia, S.
With the melting of the great ice-sheet the climate became milder, and the southern part of Sweden was covered with shrubs and plants now found only in the northern and alpine parts of the country (Salix polaris, Dryas octopetala, Betula nana, &c.).
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