Andrea B. Posted July 1, 2013 Share Posted July 1, 2013 Blum, A.G. (2013) Additional material on Datura wrightii Regel (Solanaceae) Jimsonweed. Flowers photographed in ultraviolet and visible light. http://www.ultraviol...ional-material/ Joshua Tree National Park, California, USALat [N33°55'57.2"] Lon [W115°57'18.7"]05 March 2012Wildflower Synonyms:Sacred ThornappleSacred DaturaComment:D. wrightii was first described in UV by Rørslett (2013). Here is another view of the flower together with a close-up of two of its anthers which are moderately UV-reflective with brighter streaks.Beautiful as the flower is, all parts of the plant are poisonous. It really is not a good choice as a recreational drug because it causes respiratory depression, seizures and/or death.D. wrightii grows across the continental US and Mexico and is frequently used as a garden plant because of its showy flowers. Reference:1. Jepson eFlora (2013) Datura wrightii. Jepson Herbarium, U. of Cal.-Berkeley, Berkeley, CA. http://ucjeps.berkel...JM.pl?tid=223892. Rørslett, B. 2013. Datura wrightii Regel (Solanaceae). Sacred Datura. Flowers photographed in visible and ultraviolet light. http://www.ultraviol...-sacred-datura/ Equipment [Nikon D300-broadband + Nikon 105mm f/4.5 UV-Nikkor] Visible Light [f/13 for 1/750" @ ISO 400 in Sunlight with Baader UVIR-Block Filter] Visible Light [f/8 for 1/1500" @ ISO 400 in Sunlight with Baader UVIR-Block Filter]Unopened flower. Ultraviolet Light [f/11 for 1/250" @ ISO 400 with SB-14 UV-modified Flash and Baader UV-Pass Filter]Anthers. Ultraviolet Light [f/11 for 1/250" @ ISO 400 with SB-14 UV-modified Flash and Baader UV-Pass Filter]The edges of the rolled flower bud are very UV-reflective. Link to comment
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