Patterns in Nature

For the Vitro Regeneration project i had an idea for the logo where i used pattern created by plants to make the symbol for the logo.
I will look into this further and find some more patterns but i feel this would make a nice edition to a logo.
I sway more to the spiral pattern as it would make a nice vectored image.









http://photography.nationalgeographic.com/photography/photos/patterns-flora/#/prickly-pear-cactus_9380_600x450.jpg