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UltravioletPhotography

Echinocereus engelmannii [Strawberry Hedgehog Cactus]


Andrea B.

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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, USA

22 April 2013

Wildflower in botanical garden

 

Synonyms:

  • Engelmann's Hedgehog Cactus
  • Cereus engelmannii
  • Cereus munzii
  • Echinocereus munzii (Parish) L.D. Benson

Comment:

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]

echinocereusEngelmanniiVisSun_042213desBotGardPhoenixAZ_294origProofPn203w.jpg

 

Visible Light [crop from preceding photo]

echinocereusEngelmanniiVisSun_042213desBotGardPhoenixAZ_294proofPnCenter201w.jpg

 

Visible Light [f/11 for 1/60” @ ISO 100 in Sunlight with Baader UVIR-Block Filter]

echinocereusEngelmanniiVisSun_042213desBotGardPhoenixAZ_7932proofPnw.jpg

 

Ultraviolet Light [f/11 for 1/3” @ ISO 800 with SB-14 UV-modified Flash and Baader UV-Pass Filter]

echinocereusEngelmanniiUVBaadSB14_042213desBotGardPhoenixAZ_7948proofPnw.jpg

 

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.

echinocereusEngelmanniiUVBaadSB14_042213desBotGardPhoenixAZ_7955proofPnCropw.jpg

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