[click on image to see a larger one]
Quadriptych (left to right, top to bottom): Human vision, UV, simulated butterfly vision, simulated bee vision:
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Triptych (left to right): Human vision, UV, simulated bee vision:
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Triptych (left to right): Human vision, simulated butterfly vision, simulated bee vision:
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Mexican Zinnia flowers have a very specific UV pattern. Their petals are very UV dark in the middle and bottom, their petal tips, however, are very UV bright (here around 365nm), reaching deeper into UV as any other flower I know of, and all this gets nicely visible.
I have previously written about those Zinnias HERE
Stay tuned, more will follow on that fascinating subject...