Melampodium paludosum 'Million Gold' [Butter Daisy]

[Andrea B.]

Blum, A.G. (2013) Melampodium paludosum Kunth 'Million Gold' (Asteraceae) Butter Daisy. Flowers photographed in ultraviolet and visible light. http://www.ultraviol...d-butter-daisy/

 

Middletown, New Jersey, USA

25 June 2013

Cultivar in home garden

 

Synonym:

• Melampodium leucanthum Torr. & A. Gray
  

Comment:

These Butter Daisies show an interesting variation of UV signature between the older and newer flowers. The UV-dark patch on the ray base fades with age. The UV-dark disc, however, remains dark with age. We have seen such fading of UV-dark areas in other flowers such as the Myosotis.

 

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

 

Visible Light [f/16 for 1/500" @ ISO8400 in Sunlight with Baader UVIR-Block Filter]

 

Ultraviolet Light [f/16 for 1.6" @ ISO 400 with SB-14 UV-modified Flash and Baader UVIR-Block Filter]