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UltravioletPhotography

Galium mollugo [Whorled Bedstraw]


Andrea B.

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Blum, A. G. (2015) Galium mollugo L. (Rubiaceae) Whorled Bedstraw. Flowers photographed in ultraviolet and visible light. http://www.ultraviol...orled-bedstraw/

 

Southwest Food Mart, Southwest Harbor, Maine, USA

08 July 2014

Wildflower

 

Synonyms:

  • Wild Madder
  • Smooth Bedstraw
  • White Bedstraw
  • Hedge Bedstraw

Comment:

Fluffy, fragrant clouds of yellow-budded, white-flowered G. mollugo are everywhere for a while in July.

The tiny flowers are very UV-absorbing with a bit of iridescence.

 

Reference:

1. New England Wild Flower Society (2014) Galium mollugo L. Whorled Bedstraw. https://gobotany.new...galium/mollugo/

 

Visible Light [f/9 for 1/1000" @ ISO-400 with Nikon Df + Nikon 60mm f/2.8G Micro-Nikkor]

galliumMollugo_070814swFoodMartSwhME_5536origpnCompSqCrop.jpg

 

 

Equipment [Nikon D600-broadband + Carl Zeiss 60mm f/4.0 UV-Planar]

for the next four photos

 

Visible Light [f/11 for 1.3" @ ISO-400 with onboard Flash and Baader UVIR-Block Filter]

galiumMollugoVisFlash_070914swFoodMartSwhME_20331pnPf.jpg

 

Ultraviolet Light [f/11 for 25" @ ISO-400 with SB-14 UV-modified Flash and Baader UV-Pass Filter]

A very long exposure was taken to fire the UV-flash three times.

galiumMollugoUVBaadSB14_070914swFoodMartSwhME_20337pnPf01.jpg

 

Visible Light [Rotated, unresized crop from the preceding photo.]

The textured surface of the tiny petals is evident under UV light.

galiumMollugoUVBaadSB14_070914swFoodMartSwhME_20337pnCrop100.jpg

 

UV-Induced Visible Fluorescence [f/16 for 21/xxx" @ ISO-100. Nichia 365 UV-Led, unfiltered. Lens + Baader UVIR-Block Filter. Photographed in Semi-darkness.]

The anthers and pollen are visibly fluorescent under UV light. The petals are reflecting a bit of blue light leaked from the UV-Led. These colours are unprofiled and may not be quite accurate.

galiumMollugoUVIVisFluor_070814swFoodMartSwhME_19995pf.jpg

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