I noticed that on a Creeping Zinnia young flowers (in front) do not show a prominent UV pattern, but others do (the one in the back), which are ready for pollination.
[click on image to see a larger one]
Visible light image
Simulated butterfly vision (UV=blue)
I wonder if that UV pattern would disappear when pollination has successfully happened? I guess that would be worth some scientific study (or maybe I should do it?)...
Stay tuned, more will follow on that fascinating subject...
More info on this very interesting field may be found on my site http://www.pbase.com/kds315/uv_photos