Tanacetum vulgare [Tansy]

[Andrea B.]

Blum, A.G. 2013. Tanacetum vulgare L. (Asteraceae). Tansy. Flowers photographed in ultraviolet and visible light. http://www.ultraviol...m-vulgare-tansy

15 July 2012

Southwest Harbor, Maine, USA

Wildflower

 

Synonyms:

• Golden Buttons
  
• Hierba Lombriguera
  

Comment: 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=200024584

2. 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]