# A Numbered Daisy

An alternate version of a color plate for
“Dancing elves and a flower's view of Euclid's Algorithm,”
published in 2006 in the *Mathematical Intelligencer*, volume 28,
no. 4.
The photograph is a closeup of the center of a daisy, and the seeds are
numbered in the order of growth. The coloring highlights families
of 21, 13, 8, and 34 spirals. All of these numbers are in the Fibonacci
sequence
**1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ..., **

in which each
number is the sum of the previous two numbers.
The original daisy photograph was taken by Marian Goldstine. I learned how to number
seedheads properly from John H. Conway.