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Epipactis helleborine [Broad-leaved Helleborine]

Fluorescence Conical Cells
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#1 Andrea B.

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Posted 21 May 2013 - 17:23

Blum, A.G. (2013) Epipactis helleborine L. Crantz (Orchidaceae) Broad-leaved Helleborine. Flowers photographed in ultraviolet and visible light and UV-induced visible fluorescence. http://www.ultraviol...ed-helleborine/

Southwest Harbor, Maine, USA
25 July 2013
Wildflower

Pollinator: Wasps

Synonyms:
  • Epipactis latifolia (L.) Allioni
  • Serapias helleborine L.
Comment:
This non-native (US), shade-loving, wasp-pollinated orchid can be a bit invasive if given a chance. The plant roots have a mutualistic relationship with mycorrhiza fungi. This specimen shows a visible greenish colour, but the flowers may have some pink tints also. In the UV the flower has a multi-toned appearance with the brightest area around the anther.

Reference:
1. Ehlers BK, Olesen JM and Ågren J (2002) Floral morphology and reproductive success in the orchid Epipactis helleborine: regional and local across-habitat variation. Plant Systematics and Evolution. http://mit.biology.a...20Evol%2002.pdf
2. New England Wild Flower Society (2013) Epipactis helleborine (L.) Crantz. Broad-leaved Helleborine. http://gobotany.newe...is/helleborine/

Equipment [Nikon D300-broadband + Nikon f/4.5 UV-Nikkor]

Visible Light [f/11 for 1" @ ISO 200 with onboard Flash and Baader UVIR-Block Filter]
Attached Image: epipactisHelleborineVisFlash_072512swhME_29674proofPnCropResize.jpg

Ultraviolet Light [f/11 for 20" @ ISO 200 with SB-14 UV-modified Flash and Baader UV-Pass Filter]
Attached Image: epipactisHelleborineUVBaadSB14_072512swhME_29685proofPnCutout01.jpg

Ultraviolet-induced Visible Fluorescence [f/11 for 3" @ ISO200. Nichia 365nm UV-Led + Baader UV-Pass Filter. Lens with Baader UVIR-Block Filter. Photographed in darkness.]
Note: This photo has not been formally colour-calibrated, so the colours of the Fluorescence may not be entirely accurate.
Attached Image: epipactisHelleborine365UVLedUVIndVisFluor_072512swhME_29730proof.jpg
Andrea G. Blum
Often found hanging out with flowers & bees.