Yellow Chamomile head showing the arrangement in 21 (blue) and 13 (aqua) spirals. Such arrangements involving consecutive Fibonacci numbers appear in a wide variety of plants.

Yellow Chamomile head showing the arrangement in 21 (blue) and 13 (aqua) spirals. Such arrangements involving consecutive Fibonacci numbers appear in a wide variety of plants.

Fibonacci spiral in nature

Fibonacci spiral in nature

Mathemagician Vi Hart Explains Spirals and Fibonacci Numbers in Doodles and Vegetables. I love this video and all her others.

Mathemagician Vi Hart Explains Spirals and Fibonacci Numbers in Doodles and Vegetables. I love this video and all her others.

The number of spirals on the head of Romanesco broccoli is a Fibonacci sequence. Description from webdesignstuff.co.uk. I searched for this on bing.com/images

The number of spirals on the head of Romanesco broccoli is a Fibonacci sequence. Description from webdesignstuff.co.uk. I searched for this on bing.com/images

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