Andrea B. Posted March 18, 2017 Share Posted March 18, 2017 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] Ultraviolet Light [f/8 for 1.5" @ ISO-400 with Nichia 365nm UV-LED and BaaderU UV-Pass Filter] 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.] Visible Light [f/5.6 for 1/125" @ ISO-1200 with Nikon D3S + Nikon 60mm f/2.8G Micro-Nikkor in Sunlight] Visible Light [f/4.5 for 1/100" @ ISO-800 with Nikon D3S + Nikon 60mm f/2.8G Micro-Nikkor in Sunlight] Set 2 Visible Light [f/8 for 1/8" @ ISO-400 with Onboard Flash and Baader UVIR-Block Filter] Ultraviolet Light [f/8 for 2" @ ISO-400 with Nichia 365nm UV-LED and BaaderU UV-Pass Filter] 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.] Link to comment
nfoto Posted March 18, 2017 Share Posted March 18, 2017 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. Link to comment
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