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Pieces of eight

During a school lesson outdoors, we stumbled upon what we think is an eight-headed...
Pieces of eight

During a school lesson outdoors, we stumbled upon what we think is an eight-headed daisy (see photo). It’s certainly very wide. What could have caused this unusual flower to form?

Toby Skinner and Jonathon Chappell, Barton Court Grammar School, Canterbury, Kent, UK

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