Heliopsis helianthoides 'Tuscan Sun' [Smooth Oxeye]

[Andrea B.]

Blum, A.G. (2013) Heliopsis helianthoides (L.) Sweet 'Tuscan Sun' PP18763 (Asteraceae) Smooth Oxeye. Flowers photographed in ultraviolet and visible light. http://www.ultraviol...s-smooth-oxeye/

 

Middletown, New Jersey, USA

28 July 2013

Cultivar in home garden

 

Synonyms:

• False Sunflower
  
• Oxeye Daisy
  
• Oxeye Sunflower
  
• Perennial Sunflower
  

Comment:

Attracts butterflies, heat tolerant, native to eastern North America, perennial.

In UV, H. helianthoides has a very large, central, UV-black bullseye extending about 3/4 of the ray length. The ray tips are UV-bright.

 

Reference:

1. Missouri Botanical Garden (2013) Heliopsis helianthoides 'Tuscan Sun'. http://www.missourib...tuscan-sun.aspx

 

Equipment [Nikon D600-broadband + Nikon 105mm f/4.5 UV-Nikkor]

Working indoors, I used long exposures to allow repeated flashes from different angles in an attempt to control harsh shadows and produce an even illumination.

 

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Visible Light [f/16 for 1" @ ISO 100 with onboard Flash and Baader UVIR-Block Filter]

 

Ultraviolet Light [f/16 for 20" @ ISO 400 with SB-14 UV-modified Flash and Baader UV-Pass Filter]

 

Visible Light [f/16 for 1" @ ISO 100 with onboard Flash and Baader UVIR-Block Filter]

 

Ultraviolet Light [f/16 for 20" @ ISO 400 with SB-14 UV-modified Flash and Baader UV-Pass Filter]