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Helenium autumnale [Common Sneezeweed]


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Rørslett, B. 2013. Helenium autumnale L. (Asteraceae). Common Sneezeweed. Flowers photographed in visible and ultraviolet light. https://www.ultravioletphotography.com/content/index.php/topic/109-helenium-autumnale-common-sneezeweed/

 

Helenium autumnale L.

NO: Høstbrud

EN: Common Sneezeweed; Large-Flowered Sneezeweed

 

A tall autumn-flowering perennial, H. autumnale is native to North America and cultivated as an ornamental plant elsewhere.

 

Plants photographed in Oslo, Norway 6 Sept 2010

 

HELE_AUT_I1009061288_VIS.jpg

Image reference: HELE_AUT_I1009061288_VIS.jpg

Visible light. Fuji Finepix S3 Pro UVIR LE, UV-Nikkor 105 mm f/4.5 lens, Baader UV/IR Cut filter, daylight.

 

HELE_AUT_I1009061284_UV.jpg

Image reference: HELE_AUT_I1009061284_UV.jpg

Ultraviolet light. Fuji Finepix S3 Pro UVIR LE, UV-Nikkor 105 mm f/4.5 lens, Baader U 2" (Venus) filter, SB-140 flash.

 

The disc florets are entirely UV-dark in this species, set against UV-bright ray flowers.

 

[Published 5 Feb 2013]

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