At this site:
you can see "divinely" beautiful pictures of Nature, ***including plants,*** illustrating the concept of Fractals.
(BTW, this is the first time I have run into a two-letter site. Is this new?)
As a card-carrying non-mathematician, I have always harbored a mystic reverance for Fractals. Though not a religious believer, I still wonder how anything that wondrous could exist.
If you're new to the term, here's the URL to Benoit Mandelbrot, the "discoverer" of Fractals .
(Mandelbrot spent so much of his employer's money on plane tickets so he could observe cloud formations, that they finally pulled his privileges.)