Andrea B. Posted March 14, 2018 Share Posted March 14, 2018 Blum, A.G. (2018) Hibiscus syriacus L. (Malvaceae) Rose of Sharon. Flowers photographed in visible and ultraviolet light. UV-induced visible fluorescence included. http://www.ultraviol...rose-of-sharon/Updated 01 May 2018: Added UV photo. Middletown, New Jersey, USA06 Sep 2010Cultivar shrubs in yard Synonyms:Althaea frutex Mill.Hibiscus rhombifolius Cav.Ketmia syriaca (L.) Scop.Other Common Names:Rose MallowComment: I wanted to show everyone these interesting fluorescent pollen grains. I had fogotten I had these photos and found them during my recent file re-naming effort. So interesting!This shrub is an Asian native, often seen in India. It is a popular ornamental shrub in the US.In UV light the flower is UV-dark with some iridescence. Reference:1. Missouri Botanical Garden (2018.03.19) Hibiscus syriacus. http://www.missourib...kempercode=c522 Equipment [Nikon D700-broadband + Carl Zeiss 60mm f/4.0 UV-Planar] Click to see larger versions. Visible Light [f/11 for 1/6" @ ISO-800 in Sunlight with Baader UVIR-Block Filter] Visible Light [f/11 for 1/25" @ ISO-800 in Sunlight with Baader UVIR-Block Filter]Rose of Sharon has flowers with both male and female parts. But the two photos shown here are in different stages of development. UV-Induced Visible Fluorescence [f/11 for 2" @ ISO-800. Nichia 365 UV-Led. UV-Planar + Baader UVIR-Block Filter. Photographed in Darkness.]Color has not been profiled. UV-Induced Visible Fluorescence [f/11 for 1.6" @ ISO-800. Nichia 365 UV-Led. UV-Planar + Baader UVIR-Block Filter. Photographed in Darkness.]Color has not been profiled.Focus is on the bottom center. Not much depth of field when this close.The dark bloblets are not dust bunnies, just flower debris. Unresized crop of preceding photoSome jpg artifacts showing? But still....seeing these pointy little pollen grains is amazing to me! UV-Induced Visible Fluorescence [f/11 for 2.5" @ ISO-800. Nichia 365 UV-Led. UV-Planar + Baader UVIR-Block Filter. Photographed in Darkness.] Ultraviolet Light [f/11 for 1.6" @ ISO-800 with Nichia 365nm UV-LED and BaaderU UV-Pass Filter] Link to comment
nfoto Posted March 14, 2018 Share Posted March 14, 2018 Nice find ... those pollen grains are not only spiny, they are pretty large as well. Link to comment
Erden Posted March 15, 2018 Share Posted March 15, 2018 Very nice images by well executed UV and and macro techniques. Link to comment
Andrea B. Posted May 2, 2018 Author Share Posted May 2, 2018 Updated 01 May 2018: Added UV photo. Link to comment
Andy Perrin Posted May 2, 2018 Share Posted May 2, 2018 It looks lovely in UV, Andrea. Now where is the Rose of Andrea? You must shoot it! Link to comment
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