msubees Posted July 21, 2014 Share Posted July 21, 2014 Huang, Z.Y. (2014) Apocynum androsaemifolium L. (Apocynaceae) Spreading Dogbane. Flowers photographed in ultraviolet and visible light. https://www.ultravio...eading-dogbane/ Okemos, Michigan, USA19 July, 2014Wild flower grown in a swamp. Synonyms:Apocynum ambigensApocynum pumilumApocynum scopulorumOther Common Name:Fly-trap dogbaneComment:While jogging after dinner near my neighborhood, I saw many honey bees (Apis mellifera) still foraging on this plant around 8 pm, so I took a small sample home to do UV photographing. Flowers are very fragrant. The red/pinkish stripes are more UV absorptive under UV. Tip of petals are bluish under UV but the lower part of the fused petals are UV bright (nearly white) with stripes. Reference:1. Wikipedia (21 July 2014) Apocynum androsaemifolium. Wikimedia Foundation, San Francisco, CA. Equipment [Panasonic DMC G5-broadband + DO Industries 50mm f/4.5] Visible Light [f/11 for 6" @ISO160, S8612 (1.75 mm thick),indoor incandescent light, corrected for white balance] Ultraviolet Light [f/11 for 1.3" @ISO160, S8612 (1.75 mm thick) + UG11 (1 mm thick), light provided by a modified Canon Speedlite 199A at full power, fired by hand. In-camera white balance by "Virgin Teflon"] Link to comment
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