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UltravioletPhotography

Eurybia macrophylla [Large-leaved Wood-aster]


Andrea B.

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Blum, A. G. (2017) Eurybia macrophylla (L.) Cass. (Asteraceae) Large-leaved Wood-aster. Flowers photographed in ultraviolet and visible light. http://www.ultraviol...ved-wood-aster/

 

Shore Cottage, Southwest Harbor, Maine, USA

01 August 2014

Wildflower

 

Synonyms:

  • Aster ianthinus Burgess
  • Aster macrophyllus L.
  • Aster macrophyllus L. var. apricensis Burgess
  • Aster macrophyllus L. var. excelsior Burgess
  • Aster macrophyllus L. var. ianthinus (Burgess) Fern.
  • Aster macrophyllus L. var. pinguifolius Burgess
  • Aster macrophyllus L. var. velutinus Burgess

Comment:

This E. macrophylla is not uniform in its UV-signature. It has moderately UV-absorbing ray and disk flowers, but with brighter edges and various lighter streaks. Some iridescence is at play also.

 

Reference:

1. New England Wild Flower Society (2017) Eurybia macrophylla (L.) Cass. Large-leaved Wood-aster https://gobotany.new...ia/macrophylla/

2. Haines, A. (2011) Flora Novae Angliae. Asteraceae key, page 352. Asteraceae Group 4 key, page 361. Eurybia key, page 399. Yale University Press, New Haven, CT.

 

 

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

 

 

From left to right:

Visible Light [f/11 for 2.5" @ ISO-400 with Onboard Flash and Baader UVIR-Block Filter]

Visible Light [f/11 for 1/125" @ ISO-400 with Onboard Flash and Baader UVIR-Block Filter]

eurybiaMacrophyllaPeduncle_visFlash_20140805shoreCottageSwhME_25411pn01.jpgeurybiaMacrophylla_visFlash_20140805shoreCottageSwhME_25354pn01.jpg

 

Long UV exposures were made to permit multiple UV flashes for more even coverage.

 

Ultraviolet Light [f/11 for 15" @ ISO-400 with SB-14 UV-modified Flash and BaaderU UV-Pass Filter]

eurybiaMacrophylla_uvBaadSB14_20140805shoreCottageSwhME_25378pn01.jpg

 

Ultraviolet Light [f/11 for 15" @ ISO-400 with SB-14 UV-modified Flash and BaaderU UV-Pass Filter]

Although having a bit of motion blur, this view better shows the just slightly more reflective disk florets.

eurybiaMacrophylla_uvBaadSB14_20140805shoreCottageSwhME_25386pfpn01.jpg

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