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UltravioletPhotography

Nipponanthemum nipponicum [Long Island Daisy]


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Blum, A.G. (2013) Nipponanthemum nipponicum (A. R. Franchet ex Maximowicz) S. Kitamura (Asteraceae) Long Island Daisy. Flowers photographed in ultraviolet and visible light. http://www.ultraviol...g-island-daisy/

 

Middletown, New Jersey, USA

15 October 2013

Cultivar in home garden

 

Synonyms:

  • Montauk Daisy
  • Nippon Daisy
  • Chrysanthemum nipponicum
  • Leucanthemum nipponicum

Comment:

N. nipponicum is a very late blooming daisy which is quite popular in the New York City area. It has become naturalized on some areas of Staten Island. It is a parent of the Shasta Daisy, Leucanthemum x superbum.

Like its offspring, N. nipponicum exhibits much conical cell shimmer in UV.

 

Reference:

1. Missouri Botanical Garden (2013) Nipponanthemum nipponicum. http://www.missourib...kempercode=i560

 

Visible Light [f/11 for 1/125" @ ISO 100 with onboard Flash and Baader UVIR-Block Filter]

chrysanthemumNipponicumVisFlash_101513wf_16210PNcropRes.jpg

 

Ultraviolet Light [f/4.5 for 1/20" @ ISO 400 with SB-14 UV-modified Flash and Baader UV-Pass Filter]

Not a wise aperture choice.

chrysanthemumNipponicumUVBaadSB14_101513wf_16219PNcropRes.jpg

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Apparently this particular flower head has seen rain recently.

 

Agree that shooting the UV-Nikkor wide open isn't the best way to get good bokeh in UV.

 

Its scientific name more than suggests a Japanese heritage :D

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Well, interestingly, that is not water on the rays - at least at the time of the photograph. But something has eroded portions of the ray surfaces.
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I've have seen similar spotting on flowers and corollas that have experienced rain in the last 1-2 weeks, then dried. So I was not thinking about water per se.
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OK, that is likely what has caused the mottled appearance then.

 

But why would rain cause this mottling sometimes and not other times ? This plant grows near the street, so perhaps some kind of spash of rain combined with street debris from passing tires was harsher on the plant than just plain rain ?

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