Tropaeolum majus 'Alaska Mixed' [Garden Nasturtium]

[Andrea B.]

Blum, A.G. (2013) Tropaeolum majus L. 'Alaska Mixed' (Tropaeolaceae) Garden Nasturtium. Flowers photographed in ultraviolet and visible light. http://www.ultraviol...den-nasturtium/

 

Charlotte Rhoades Park & Butterfly Garden, Southwest Harbor, Maine, USA

16 July 2012

Cultivar in botanical garden

 

Comment:

The intricately structured Garden Nasturtium has a richly textured surface in UV indicative of conical cells. There is a UV-sheen that plays across the petals with the light giving a UV-dark and UV-blue patchiness. Most of the visible venation becomes UV-dark although the distinct visible throat streaks are obscured in UV by a generally UV-dark throat.

 

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

 

Visible Light [f/11 for 1/125" @ ISO 200 with onboard Flash and Baader UVIR-Block Filter]

 

Ultraviolet Light [f/11 for 1/100" @ ISO 320 with SB-14 UV-modified Flash and Baader UV-Pass Filter]

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