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UltravioletPhotography

Cardamine impatiens [Narrowleaf Bittercress]: W-FB


Andrea B.

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Blum, A.G. (2017) Cardamine impatiens L. (Brassicaceae) Narrowleaf Bittercress. Flowers photographed in ultraviolet and visible light. UV-induced visible fluorescence included. http://www.ultraviol...mine-impatiens/

 

Holmdel Park, Holmdel, New Jersey, USA

11 May 2010

Wildflower

 

Comment:

The various Cardamines are early spring bloomers in New Jersey. Although C. impatiens has become somewhat invasive, it is a pretty plant with its fluffly white flower cluster and its feathery pinnately compound leaves.

The most striking feature of its UV appearance are the white-striped anthers. The petals are brighter in UV than the unopened buds. Under blacklight, the petals fluoresce blue or blue-violet against a background of red chlorophyll fluorescence.

 

Reference:

1. New England Wild Flower Society (March 2017) Cardamine impatiens. Narrow-leaved Bittercress.

https://gobotany.new...mine/impatiens/

 

Equipment [Nikon D200-broadband + Carl Zeiss 60mm f/4.0 UV-Planar]

Unless otherwise noted.

 

Set 1

Visible Light [f/8 for 1/8" @ ISO-400 with Onboard Flash and Baader UVIR-Block Filter]

cardamineImpatiensVis051110holmdelParkHolmdelNJ_42337origpn.jpg

 

Ultraviolet Light [f/8 for 1.5" @ ISO-400 with Nichia 365nm UV-LED and BaaderU UV-Pass Filter]

cardamineImpatiens365UV051110holmdelParkHolmdelNJ_42342pfpn.jpg

 

UV-Induced Visible Fluorescence [f/8 for 1.5" @ ISO-400. Nichia 365nm UV-Led (unfiltered). Lens with Baader UVIR-Block Filter. Photographed in Darkness.]

cardamineImpatiens365UVIndVisFluor051110holmdelParkHolmdelNJ_42340pf.jpg

 

Visible Light [f/5.6 for 1/125" @ ISO-1200 with Nikon D3S + Nikon 60mm f/2.8G Micro-Nikkor in Sunlight]

cardamineImpatiensVis051110holmdelParkHolmdelNJ_7855pnCrop.jpg

 

Visible Light [f/4.5 for 1/100" @ ISO-800 with Nikon D3S + Nikon 60mm f/2.8G Micro-Nikkor in Sunlight]

cardamineImpatiensVis051110holmdelParkHolmdelNJ_7849pf.jpg

 

Set 2

Visible Light [f/8 for 1/8" @ ISO-400 with Onboard Flash and Baader UVIR-Block Filter]

cardamineImpatiensVis051110holmdelParkHolmdelNJ_42320origpn.jpg

 

Ultraviolet Light [f/8 for 2" @ ISO-400 with Nichia 365nm UV-LED and BaaderU UV-Pass Filter]

cardamineImpatiens365UV051110holmdelParkHolmdelNJ_42331origpn.jpg

 

UV-Induced Visible Fluorescence [f/8 for 1.5" @ ISO-400. Nichia 385nm UV-Led (unfiltered). Lens with Baader UVIR-Block Filter. Photographed in Darkness.]

cardamineImpatiens385UVIndVisFluor051110holmdelParkHolmdelNJ_42326origpn.jpg

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Narrow-leaved Bitter-Cress appears to be the English common name. This species evidently is not native to North America.

 

Very nice and informative presentation, by the way.

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