Romanesco broccoli, or Roman cauliflower, is an edible flower of the species Brassica oleracea, and a variant form of cauliflower. The broccoli's shape approximates a natural fractal; each bud is composed of a series of smaller buds, all arranged in yet another Logarithmic Spiral. This self-similar pattern continues at several smaller levels.
The spiral shapes of the florets describe a Fibonacci Mathematical Series, one in which each number is the sum of two previous numbers. For example: 0, 1, 1, 2, 3, 5, 8, 13, 21 and so on. This series was discovered by Italian mathematician Leonardo Fibonacci (1170-1240) and many natural patterns can be described using it.