Found Functions is a project by Nikki Graziano, that was mentioned in Wired 18.02 - where a variation of functions is superimposed on photos of nature after returning with promising snaps. The image to the left is the third on in the series right now.
Really inspirational, as there is a lot of both variation and repitition in nature, the possible avenues of development or investigation is rather large. I've got a couple of books in the library related to the crossover - currently unread is "Curves of Life" (unavailable at Amz now, whilst Elams book Geometry of Design: Studies in Proportion and Composition is a great read - as it combines the academic with the everyday.
btw, the amazon search widget needs some serious speed help, no wonder there is a separate "optimize" selection in the info - @blogger