Seed pod of Thorn Apple: Datura sp. fluorescing under UV light when immersed in surgical spirit

Seed pod of Thorn Apple: Datura sp. fluorescing under UV light when immersed in surgical spirit

I first read about this phenomenon in "The Unofficial Countryside" by Richard Mabey. I am still trying to find out what is happening here!
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Seed pod of Thorn Apple: Datura sp. fluorescing under UV light when immersed in surgical spirit

I first read about this phenomenon in "The Unofficial Countryside" by Richard Mabey. I am still trying to find out what is happening here!
Ref:
Date:
Location:
Photographer: