nfoto Posted February 5, 2013 Share Posted February 5, 2013 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: HøstbrudEN: 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 Image reference: HELE_AUT_I1009061288_VIS.jpgVisible light. Fuji Finepix S3 Pro UVIR LE, UV-Nikkor 105 mm f/4.5 lens, Baader UV/IR Cut filter, daylight. Image reference: HELE_AUT_I1009061284_UV.jpgUltraviolet 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] Link to comment
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