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UltravioletPhotography

Ratibida columnifera [Prairie Coneflower]


Andrea B.

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Blum, A.G. (2012) Ratibida columnifera (Nuttall) Wooton & Standley (Asteraceae) Prairie Coneflower. Flowers photographed in ultraviolet and visible light. http://www.ultraviol...rie-coneflower/

 

Middletown, New Jersey, USA

30 June 2007

Wildflower in home garden

 

Comment:

This Coneflower was part of a wildflower seed packet that I grew in my garden. It typically grows in the prairies of the US and Canada and is also found in Mexico. The columnar disc is UV-bright until the UV-dark disc florets cover it as they open from the bottom up.

 

Reference:

1. Flora of North America Online. (2012) Ratibida columnifera, vol. 21, pp. 62-63. FNA. New York & Oxford. http://www.efloras.o...on_id=242417124

 

Equipment [Nikon D200-broadband + Nikon 105mm f/4.5 UV-Nikkor]

 

Visible Light [f/11 for 1/250" @ISO400 in Sunlight with Baader UVIR-Block Filter]

ratibidaColumnarisVis063007wf_15102proofPnCrop.jpg

 

Ultraviolet Light [f/1 for 1" @ISO400 in Sunlight with Baader UV-Pass Filter]

ratibidaColumnarisUV063007wf_15104proofPnCrop.jpg

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