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The Menai whitebeam grows in just one small section of steep coast along the Menai Straits.

There are only about 30 Menai whitebeam left - and they are all on a small stretch of coast between the Welsh mainland and Anglesey.

"The Menai whitebeam raises interesting questions about what defines a species and has the potential to engage local people in local conservation. We are just starting to do some research on the tree and the threats it faces."

The remaining Menai whitebeam are at the Nantporth Nature Reserve, making the area "unique", according to senior reserve manager Chris Wynne.

He is based in Gwynedd and has now joined the efforts to save the Menai whitebeam as well.