nfoto Posted June 28, 2013 Share Posted June 28, 2013 Rørslett, B. 2013. Porophyllum gracile Benth. (Asteraceae). Odora. Flowers photographed in visible and ultraviolet light. http://www.ultraviol...-gracile-odora/ Porophyllum gracile Benth.EN: Odora; Slender poreleaf A small perennial shrub native to deserts in Northern Mexico and adjacent parts of United States, P. odora is a strongly scented plant with a few (10-30) tiny disc florets enclosed in a a waxy involucre Plant photographed in Joshua Tree National Park, California USA 4 Mar 2012. Image reference: :PORO_GRA_G1203042655_VIS.jpgVisible light: Nikon D3S, Voigtländer 125 mm f/2.5 APO-Lnthar lens, daylight. Ultraviolet light: PORO_GRA_I1203044418_UV.jpgUltraviolet light: Nikon D40X, UV-Nikkor 105 mm f/4.5 lens, Baader U2" (Venus) filter, SB-140 flash. The corolla of the disc flower is moderately UV-reflective whilst the anther tube and pollen are UV-dark. References:http://www.ultravioletphotography.com/content/index.php?/topic/88-common-literature-references/ [Published 28 June 2013] Link to comment
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