Rudbeckia hirta 'Denver Daisy' [Gloriosa Daisy]

[Andrea B.]

Blum, A.G. (2013) Rudbeckia hirta L. 'Denver Daisy' (Asteraceae) Gloriosa Daisy. Flowers photographed in ultraviolet and visible light. http://www.ultraviol...gloriosa-daisy/

 

Middletown, New Jersey, USA

09 September 2013

Cultivar in home garden

 

Comment:

This beautiful Rudbeckia with the dark red center was created to celebrate the 150th anniversary of the city of Denver, Colorado. Note that the UV-dark bullseye is larger than the visible bullseye.

 

Reference:

1. Perennials.com (2013) Rudbeckia hirta 'Denver Daisy' http://www.perennial...nver-daisy.html

 

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

 

Visible Light [f/8 for 1/400" @ ISO 100 with Baader UVIR-Block Filter]

 

Ultraviolet Light [f/8 for 1/8" @ ISO 400 in Sunlight with Baader UV-Pass Filter]

[nfoto]

Apparently, the underside of the ray flowers is a different signature in UV - did you shoot the flower heads from the lower side as well?

[Andrea B.]

Eerrmmmmm, wellllll, noooo, I didn't. I forgot that we were always going to do that.

I still have these flowers though. So I will get that done tomorrow.