Penstemon parryi [Parry's Beardtongue]

[Andrea B.]

Blum, A.G. (2015) Penstemon parryi (A. Gray) A. Gray (Plantaginaceae) Parry's Penstemon. Flowers photographed in ultraviolet and visible light. http://www.ultraviol...ys-beardtongue/

 

Organ Pipe Cactus National Monument, Arizona, USA

10 March 2012

Wildflower

 

Synonyms:

• Desert Beardtongue
  

Comment:

Recognized by pollination ecologists as attracting large numbers of bees.¹

 

Reference:

1. Lady Bird Johnson Wildflower Center (2015) Penstemon parryi. University of Texas at Austin, Austin, TX. http://www.wildflowe...id_plant=PEPA24

 

Equipment [Nikon D300-broadband + Carl Zeiss 60mm f/4.0 UV-Planar]

 

Visible Light [f/11 for 1/250" @ ISO-250 in Sunlight with Baader UVIR-Block Filter]

In late afternoon sun the candy pink of this P. parryi is even more intense.

 

Ultraviolet Light [f/11 for 1/250" @ ISO-250 in Sunlight with Andrea-U UV-Pass Filter]

Anthers, pollen and hair tufts of P. parryi show some minor UV-reflection.