Andrea B. Posted June 11, 2013 Share Posted June 11, 2013 Blum, A.G. (2013) Echinocereus engelmannii (Parry ex Engelmann) Lemaire (Cactaceae) Strawberry Hedgehog Cactus. Flowers photographed in visible and ultraviolet light. http://www.ultraviol...edgehog-cactus/ Desert Botanical Garden, Phoenix, Arizona, USA22 April 2013Wildflower in botanical garden Synonyms:Engelmann's Hedgehog CactusCereus engelmanniiCereus munziiEchinocereus munzii (Parish) L.D. BensonComment:The incredibly vivid magenta blooms with lime green stigmas are stunning on the clumps of short spiny stems which give the Hedgehog cacti their common name. The fruits of E. engelmannii have a strawberry-like taste which accounts for the rest of its common name. The very UV-dark flowers stand out against the UV-bright spines. The blooms show a lot of iridescence. Reference:1. Epple, A.O. (1995) Strawberry Hedgehog, page 160. A Field Guide to the Plants of Arizona. Falcon Guides, Globe Pequot Press, Guilford, CT. Equipment:[Nikon D600-broadband + Nikon 105mm f/4.5 UV-Nikkor][Nikon Coolpix A] Visible Light [f/5.6 for 1/500” @ ISO 100 with Coolpix A] Visible Light [crop from preceding photo] Visible Light [f/11 for 1/60” @ ISO 100 in Sunlight with Baader UVIR-Block Filter] Ultraviolet Light [f/11 for 1/3” @ ISO 800 with SB-14 UV-modified Flash and Baader UV-Pass Filter] Ultraviolet Light [f/4.5 for 1/25” @ ISO 1600 with SB-14 UV-modified Flash and Baader UV-Pass Filter]I wanted to show the interior of this flower which seems to have a UV-bright ring at the bottom. But this was one of the rare times when my tripod and camera could not be positioned to shoot down into the flower, so I had to hand-hold the rig to achieve the shot. This resulted in a bit of blur in the foto. Link to comment
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