[click on image to see a larger one]
Human vision:
Reflected UV:
Simulated butterfly vision:
Simulated bee vision:
Quadriptych of human vision, UV, simulated butterfly and bee vision (left to right, top to bottom):
Arrowwood bush flowers have no distinct UV reflection pattern, but their stamen create a UV dark center important to attract UV seeing pollinators and this gets nicely visible here, also in simulated bee and butterfly vision.
More info on this very interesting field may be found on my site http://www.pbase.com/kds315/uv_photos