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The Teesdale Assemblage

Upper Teesdale's position as a British botanical hotspot reflects the unusually large number of rare plant species found here and the fact that plants with very different geographical distributions grow together.


Teesdale Violet (Viola rupestris), light demanding late-glacial relic species

Teesdale Violet: M Rogers

This unusual combination of northern and southern species, and some with a western link, growing together occurs nowhere else in Britain. This ‘Teesdale Assemblage’ of rare plants is considered to have survived continuously since shortly after the last glaciation some 10-12,000 years ago.

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