Well, another nice target for UV photographic experiments is Bidens ferulifolia, the variety "Peters's Surprise".
Equipment used was: Nikon D70 (unmodified), ISO400, f5.6-8, 1/160sec, old 100mm enlarger lens.
[click on image to see a larger one]VIS using XCUT2 filter (400-650nm):
UV using Baader U-filter (310-390nm) - synthetic DOF:
XUVIR multispectral filter (300-1000nm), UV Flash:
UV induced fluorescence using XCUT2 filter (400-650nm), UV flash:
So, as you may see, a variety of results also that flower shows us.
P.S.: if you wonder what "synthetic DOF" means, I used "stacking" to increase the DOF artificially.
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