Amsinckia tessellata [Devil's Lettuce]: Another Example

[Andrea B.]

Blum, A.G. (2013) Another Example of Amsinckia tessellata A. Gray (Boraginaceae) Devil's Lettuce. Flowers photographed in ultraviolet and visible light. http://www.ultraviol...nother-example/

 

Mohave National Preserve, California, USA

03 March 2012

Wildflower

 

Synonyms:

• Checker Fiddleneck
  
• Bristly Fiddleneck
  

Comment:

Rørslett (2013) first described an A. tessellata from Joshua Tree National Park in UV. The example here was seen further north in the Mohave National Preserve. In Ultraviolet A. tessellata's 5 red spots becomes UV-black while the bright yellow corolla is UV-bright. The foliage and calyx are UV-dark.

 

Reference:

1. Jepson eFlora (2013) Amsinckia tessellata. Jepson Herbarium, U. of Cal.-Berkeley, Berkeley, CA. http://ucjeps.berkel...JM.pl?tid=13151

2. Rørslett, B. (2013) Amsinckia tesselata A. Gray (Asteraceae). Devil's Lettuce. Flowers photographed in visible and ultraviolet light. http://www.ultraviol...devils-lettuce/

 

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

 

Visible Light [f/11 for 1/500" @ ISO 200 in Sunlight with Baader UVIR-Block Filter]

 

Ultraviolet Light [f/4 for 1/250" @ ISO 400 with SB-14 UV-modified Flash and Baader UV-Pass Filter]

 

Ultraviolet Light [f/8 for 1/250" @ ISO 400 with SB-14 UV-modified Flash and Baader UV-Pass Filter]