Dave Kennard

Dave Kennard

Posted on 08/24/2013


Photo taken on August 24, 2013


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Keywords

Asteraceae
Jacobaea
Angiosperms
Senecio cineraria
Asters
Silver Ragwort
Flowering Plants
Biota
Dicotyledons
UV Photography
IR Photography
Nectar guide
Compositae
Eukaryota
Life
Infrared
Vitae
Plants
Ultraviolet
Plantae
Magnoliophyta
Magnoliopsida
Sunflowers
Daisies
Asterales
Jacobaea maritima


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Jacobaea maritima (Silver Ragwort) flowers Vis UV IR

Jacobaea maritima (Silver Ragwort) flowers Vis UV IR
Comparison of Jacobaea maritima (Silver Ragwort) flowers photographed with visible light (top), ultraviolet light (middle), and infrared light (bottom).

In visible light the flowers appear bright yellow, with the centres being slightly darker than the petals.

In ultraviolet light the centres appear quite dark, helping guide bees and other insects that can see in the ultraviolet spectrum to the area of the flower where the nectar and pollen are located.

In infrared light the petals and centres of the flowers have roughly the same reflectance.

This photo is freely available for you to use under the Creative Commons Attribution Share-alike licence. If using this image, please credit Dave Kennard / www.davidkennardphotography.com.

You can see more images like this on my Vis UV IR flower photos blog.

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