Followers of Fibonacci numbers & golden ratio will already know the significance of the floret of a sunflower.
Though it is said that the florets within a sunflower's head form a lovely spiral, finding one that makes a decent photograph wasn't as easy as it looks like. Most of the flowers I looked into did not display this pattern. I got the exact angles and dimensions from some searching on the internet, so here comes the interesting part: Each floret is inclined at an angle of 137.5 degrees, which is the Golden angle. This pattern is what produces the spirals observed. I fail to recollect, but the number of spirals in both directions are also numbers from the Fibonacci Sequence. Interesting, isn't it?
This also happens to be my very first non-standard crop.
Explored - #8 on July 12, 2012