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Abronia villosa [Desert Sand Verbena]


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#1 nfoto

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Posted 30 June 2013 - 09:52

Rørslett, B. 2013. Abronia villosa S.Wats. (Nyctaginaceae). Desert Sand Verbena. Flowers photographed in visible and ultraviolet light. http://www.ultraviol...t-sand-verbena/

Abronia villosa S.Wats.
EN: Desert Sand Verbena; Wild Lantana

This is a prostrate creeping plant native to deserts of southwestern USA and northern Mexico. Also used as an ornamental plant in rock gardens. The entire plant is fragrant and tends to be sticky.

Plants photographed at Yuma, Arizona USA 9 Mar 2012.

The original visible reference shot was lost due to file corruption. Here is an example of the visual appearance of A. villosa.

Attached Image: ABRO_VILL_BY_GARY_A_MONROE_Create_COmmons_license_0380_VIS.jpg

CalPhotos ID: 0000 0000 1002 0380 © 1993 Gary A. Monroe. Creative Commons License http://creativecommo...nses/by-nc/3.0/ For use contact Gary Monroe (g.monroe[AT]att.net)

Attached Image: ABRO_VILL_I1203090718.jpg
Image reference: ABRO_VILL_I1203090718.jpg
Ultraviolet light: Panasonic GH-2, Coastal Optics 60 mm f/4 lens, Baader U2" (Venus) filter SB-140 flash.

In UV, the corolla of A. villosa exhibits large patches of conical cells and signs of iridescence. There is a UV-dark centre of the flower by and large corresponding to the visible bright area. Also seen are the sand grains that adhere to the sticky foliage.

References:
http://www.ultraviol...ure-references/

[Published 30 June 2013]