Ultraviolet Flowers

Bidens cf. ferulifolia
Coreopsis sp. Visible light
Visible light
(L37C filter)
Coreopsis sp. UV light
UV light
(Hoya U-340 , SB-140)
Both images: Nikon D70 , UV-Nikkor 105 mm f/4.5 @800 ISO

© Bjørn Rørslett/NN

I found this specimen as a garden escape and have it only tentatively identified. I'd appreciate a definitive identification from people familiar with this species.

Anyway, this yellow-flowered Composite species exhibits very strong and beautiful UV markings extending out to the ray florets as well as the central disc.

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Last Update 24 October, 2006