Opuntia macrocentra [Black-spined Pricklypear]

[Andrea B.]

Blum, A.G. (2013) Opuntia macrocentra Engelmann (Cactaceae) Black-spined Pricklypear. Flowers photographed in ultraviolet and visible light. http://www.ultraviol...d-pricklypear/

 

Desert Botanical Garden, Phoenix, Arizona, USA

22 April 2013

Wildflower in botanical garden

 

Synonyms:

• Purple Pricklypear
  
• Long-spined Pricklypear
  
• Opuntia violacea Engelmann ex B. D. Jackson
  
• O. violacea var. castetteri L. D. Benson
  
• O. violacea var. macrocentra (Engelmann) L. D. Benson
  

Comment:

 

Reference:

1. Flora of North America Online (2013) Opuntia macrocentra Engelmann, vol. 4. FNA. New York & Oxford. http://www.efloras.o...on_id=242415203

2. Desert Botanical Garden, Phoenix, Arizona, USA

 

Equipment [Nikon D600-broadband + Nikon 105mm f/4.5 UV-Nikkor]

 

Visible Light [f/6.3 for 1/640" @ ISO 100 using Nikon Coolpix A]

 

Visible Light [f/8 for 1/400" @ ISO 100 in Sunlight with Baader UVIR-Block Filter]

 

Ultraviolet Light [f/4.5 for 1/30" @ ISO 1270 with SB-14 UV-modified Flash and Baader UV-Pass Filter]