Bradshaw is the chief caretaker of some of the country’s rarest flowers. She has spent seven decades obsessively studying the unique arctic-alpine flora of Teesdale, in the north of England.

Where once [these flora] were widespread in Britain, now only fragments remain, and 28 species are threatened with extinction.

“Everything about Teesdale is unique,” says Bradshaw with pride – and the authority of someone who has just written a 288-page book on the subject.

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Since the 1960s, plant abundance has dropped by 54% on average. Some have essentially disappeared, such as the dwarf milkwort, down by 98%, and the hoary whitlow-grass, down by 100% (there is now just one recorded plant). Her data suggests these “shocking” declines are continuing.

Bradshaw sees those declines as British heritage disappearing. She says: “We’ve got various buildings in the country – Stonehenge, Durham Cathedral, and others; if they were crumbling away, there would be groups and money helping stop it, because people would say: ‘We can’t let this happen.’

Despite Bradshaw’s guardianship of this land, and the love and energy she has put into saving it, the future here is unknown. The last words of her book speak to this unrelenting loss. “This is our heritage, this unique assemblage of plant species, mine and yours,” she writes. “In spite of trying, I have failed to prevent its decline, now it is up to you.”