Ultraviolet Flowers

Cicerbita alpina (L.)Wallr.
Cicerbita alpina. Visible light
Visible light
(L37C filter)
Cicerbita alpina. UV light
UV light
(FF , SB-140)
Both images: Nikon D1H , UV-Nikkor 105 mm f/4.5 @800 ISO

© Bjørn Rørslett/NN

An upland and mountaineous species with numerous quite small, light-violet flower heads. Each composite flower exhibits a typical two-zoned UV pattern, but the contrast between these zones is lowered due to a reduced UV reflectance of the petals. To complicate the matters further, the tip of the involute petals strongly reflects UV.

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Last Update 1 October, 2002