Nama demissum [Purplemat]: Another Example

[Andrea B.]

Blum, A.G. (2013) Another example of Nama demissum A. Gray var. demissum (Boraginaceae) Purplemat. Flowers photographed in ultraviolet, visible and infrared light. http://www.ultraviol...nother-example/

 

Joshua Tree National Park, California, USA

05 March 2012

Wildflower

 

Comment:

Nama was formerly placed in the family Hydrophyllaceae.

The single-style variety Nama demissum var. colvillei is found further north in the Death Valley area.

Nama demissum was first described in UV by Rørslett(2013). The vibrant magenta flower of the double-styled N. demissum var. demissum is UV-absorbing. Note that the older flowers, beginning to shrivel up, have become more UV-reflective. There appear to be some conical cells creating a dark shimmer across the corolla and a ring at the corolla's throat. The anthers are UV-bright.

 

Reference:

1. Jepson eFlora (2013) Nama demissum var. demissum. Jepson Herbarium, U. of Cal.-Berkeley, Berkeley, CA. http://ucjeps.berkel...JM.pl?tid=62249

2. Rørslett, B. (2013)

 

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]

On its way to forming a big mat.

 

Visible Light [f/8 for 1/1500" @ ISO 400 with Nikon D3S + Nikon 60mm f/2.8G Micro-Nikkor]

Growing amongst the rocks.

 

Ultraviolet Light [f/11 for 1/160" @ ISO 400 with SB-14 UV-modified Flash and Baader UV-Pass Filter]

 

Infrared Light [f/11 for 1/160" @ ISO 400 in Sunlight with B+W 092 IR-Pass Filter]