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UltravioletPhotography

Cylindropuntia alcahes [Baja California Cholla]


Andrea B.

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Blum, A.G. (2013) Cylindropuntia alchahes (F.A.C.Weber) F.M.Knuth (Cactaceae) Baja California Cholla. Flowers photographed in ultraviolet and visible light. http://www.ultraviol...puntia-alcahes/

 

Desert Botanical Garden, Phoenix, Arizona, USA

25 April 2013

Wildflower in botanical garden

 

Synonyms:

  • Clavellina Cholla
  • Opuntia alcahes F.A.C.Weber
  • Opuntia brevispina H.E.Gates
  • Cylindropuntia brevispina (H.E.Gates) Backeb.
  • Opuntia burrageana Britton & Rose
  • Cylindropuntia burrageana (Britton & Rose) Backeb.

Comment:

This staghorn type cholla is native to Baja California and its gulf islands. The flower shows a strong ring of iridescence in UV which makes it stand out against the darker cholla segments.

 

Reference:

1. Felger, R.S. and Wilder, B.T. (2012) Cylindropuntia alcahes, page 230. Life of a Desert Archipelago, The University of Arizona Press, Tucson, AZ.

 

Equipment: [Nikon DX00-broadband + Nikon 105mm f/4.5 UV-Nikkor]

 

Visible Light [f/11 for 1/200" @ ISO 100 with onboard Flash and Baader UVIR-Block Filter]

cylindropuntiaAlcahesVisFlash_042513desBotGardPhoenixAz_9647origProofPnProofPnCrop2.jpg

 

Ultraviolet Light [f/11 for 1/40" @ ISO 400 with SB-14 UV-modified Flash and Baader UV-Pass Filter]

cylindropuntiaAlcahesUVBaadSB14_042513desBotGardPhoenixAz_9671proofPnCrop.jpg

 

Ultraviolet Light [f/11 for 1/60" @ ISO 400 with SB-14 UV-modified Flash and Baader UV-Pass Filter]

cylindropuntiaAlcahesUVBaadSB14_042513desBotGardPhoenixAz_proofPnCrop.jpg

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