Andrea B. Posted April 8, 2013 Share Posted April 8, 2013 Blum, A.G. (2013) Coreopsis grandiflora Hogg et Sweet 'Baby Sun' (Asteraceae) Large-flower Tickseed. Flowers photographed in ultraviolet and visible light. http://www.ultraviol...wered-tickseed/ Charlotte Rhoades Park & Butterfly Garden, Southwest Harbor, Maine, USA16 July 2012Cultivar in botanical garden Comment:The visible dark red patches on the ray base disappear in the overall dark UV-signature. There is some light-dependent UV-reflectivity on the rays from presence of conical cells. Equipment [Nikon D300-broadband + Carl Zeiss 60mm f/4.0 UV-Planar] Visible Light [f/11 for 1/125" @ ISO 200 with On-board Flash and Baader UVIR-Block Filter] Ultraviolet Light [f/11 for 1/60" @ ISO 320 with SB-14 UV-modified Flash and Baader UV-Pass Filter] Link to comment
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