Ultraviolet Flowers

Senecio jacobea L.
Senecio jacobea. Visible light
Visible light
(L37C filter)
Senecio jacobea. UV light
UV light
(Hoya U-360 , SB-140)
Both images: Nikon D70 , UV-Nikkor 105 mm f/4.5 @800 ISO

© Bjørn Rørslett/NN

Common Ragwort is an obnoxious weed and a poisonous plant too, but tries to make up for this by flashing a strong UV signal to any pollinators happening to cruise by.

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Last Update 19 August, 2005