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UltravioletPhotography

Perityle emoryi [Emory's Rock Daisy]


Andrea B.

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Blum, A.G. (2013) Perityle emoryi Torrey (Asteraceae) Emory's Rock Daisy. Flowers photographed in ultraviolet and visible light. http://www.ultraviol...rys-rock-daisy/

 

Joshua Tree National Park, California, USA

Lat [N33°43'09.5"] Lon [W115°48'43.2"]

05 March 2012

Wildflower

 

Synonyms:

  • Perityle emoryi Torr. var. nuda (Torr.) A. Gray

Comment:

This Rock Daisy grows in coastal or Creosote Bush scrublands. It has UV-dark disc florets which show bright tips prior to opening. The ray florets are moderately UV-dark.

 

Reference:

1. Jepson eFlora (2013) Perityle emoryi. Jepson Herbarium, U. of Cal.-Berkeley, Berkeley, CA. http://ucjeps.berkel...IJM.pl?tid=4303

 

Equipment [Nikon D300-broadband + Nikon 105mm f/4.5 UV-Nikkor]

 

Visible Light [f/9.5 for 1/750" @ ISO 400 with Nikon D3S + Nikon 60mm f/2.8G Micro-Nikkor]

perityleEmoryiVisSun03052012joshuaTreeNpCA_35282origProofPnCrop.jpg

 

Visible Light [f/9.5 for 1/750" @ ISO 400 with Nikon D3S + Nikon 60mm f/2.8G Micro-Nikkor]

perityleEmoryiVisSun03052012joshuaTreeNpCA_35284origProofPn.jpg

 

Ultraviolet Light [f/8 for 1/200" @ ISO 400 with SB-14 UV-modified Flash and Baader UV-Pass Filter]

The unopened disc florets have UV-bright tips. The UV-bright pollen grains are easily seen.

perityleEmoryiUVBaadSB14030512joshuaTreeNpCA_23335origProofPn.jpg

 

Ultraviolet Light [f/8 for 1/100" @ ISO 200 with SB-14 UV-modified Flash and Baader UV-Pass Filter]

UV light reveals some wear & tear on the ray florets of an older flower.

perityleEmoryiUVBaadSB14030512joshuaTreeNpCA_23333origProofPn.jpg

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