Andrea B. Posted May 28, 2013 Share Posted May 28, 2013 Blum, A.G. (2013) Chrysogonum virginianum L. (Asteraceae) Green-and-Gold. Flowers photographed in ultraviolet and visible light. http://www.ultraviol...green-and-gold/ Deep Cut Gardens, Middletown, New Jersey, USA15 May 2013Wildflower in botanical garden Synonyms:Golden KneeGolden StarComment:Chrysogonum virginianum, native to the southeastern US woodlands, is reported by some to have hallucinogenic properties yet it is widely sold by plant nurseries. The flower has a classical UV-bullseye. The involucre and abaxial leaf surface show a different UV tonality (false UV-blue) than the upper leaf surface which is UV-black. Reference:1. Newcomb, L. (1977) Golden Star, page 278. Newcomb's Wildflower Guide. Little, Brown & Co., New York City, NY. Equipment:[Nikon D600-broadband + Carl Zeiss 60mm f/4.0 UV-Planar][Nikon Coolpix A] Visible Light [f/8 for 1/40" @ ISO 100 with Coolpix A] Visible Light [f/11 for 1/200" @ ISO 400 with onboard Flash and Baader UVIR-Block Filter] Ultraviolet Light [f/11 for 1/100" @ ISO 400 with SB-14 UV-modified Flash and Baader UV-Pass Filter] Visible Light [f/11 for 1/125" @ ISO 640 in Sunlight with Baader UVIR-Block Filter] Ultraviolet Light [f/11 for 1/100" @ ISO 400 with SB-14 UV-modified Flash and Baader UV-Pass Filter] Link to comment
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