Sacred Geometry in nature

Home now. Long drive back from Kent. 
These pictures were taken on our walk around Higham Marshes and are of dried teasel leaves. I’m responding to the MonoMonday theme quirky/peculiar - although these pictures were taken yesterday. Struggled to find a way of getting sepia and finally found it in the BeFunky app.
The thumbnail shows the golden ratio, the other image the Vesica Pisces, I’m tagging for MM although they may not qualify. Thanks to Mole for hosting
I’ve back blipped yesterday’s image if you have time - I’m not sure why I can’t seem to add the link