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Why Is a Flower Five-Petaled?

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This paper examines why many flowers are five-petaled through the use of a five-petaled model that draws insights from the location of cell clusters at a shoot apex, rather than by way of the Fibonacci sequence or the golden ratio as in the past. The conclusion drawn is that flowers are most likely to be five-petaled, followed by six-petaled; four petals are unstable and almost no flower can be seven-petaled.

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Nishiyama, Y. Why Is a Flower Five-Petaled?. Journal of Science Education and Technology 13, 107–114 (2004).

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  • flower
  • cell
  • petal
  • leaf
  • pentagon
  • Fullerene