Andrea B. Posted February 2, 2013 Share Posted February 2, 2013 Blum, A.G. 2013. Tanacetum vulgare L. (Asteraceae). Tansy. Flowers photographed in ultraviolet and visible light. http://www.ultraviol...m-vulgare-tansy15 July 2012Southwest Harbor, Maine, USAWildflower Synonyms:Golden ButtonsHierba LombrigueraComment: Having no ray florets gives this flower its button-like appearance. The plant has naturalized in various areas in the US after escaping from some garden. In the UV it has a uniformly dark appearance with a few teases of false UV-blue around the rim of opened florets. Reference:1. Flora of North America Online (2013) Tanacetum vulgare, vol. 21, pp. 490. FNA. New York & Oxford. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=2000245842. Newcomb, L. (1977) Tansy, page 426. Newcomb's Wildflower Guide. Little, Brown & Co., New York City, NY. Equipment [Nikon D300-broadband + Carl Zeiss 60mm f/4.0 UV-Planar] Visible Light [f/11 for 1/6" @ ISO 200 with onboard Flash and Baader UVIR-Block Filter] Ultraviolet Light [f/11 for 2.5" @ ISO 200 with SB-14 UV-modified Flash and Baader UV-Pass Filter] Link to comment
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