Nico Posted May 26, 2013 Share Posted May 26, 2013 Chalwatzis, N. 2013. Another Lamiastrum galeobdolon (L.) Ehrend. & Polatschek (Lamiaceae). Yellow Archangel. Flowers photographed in visible and ultraviolet light, including simulated bee colours. Lamiastrum galeobdolon (L.) Ehrend. & PolatschekSyn. Galeobdolon luteum Huds., Lamium galeobdolon (L.) L.NO: Gulltvetann, gulltvitannSE: Gulplister, guldplister, gulsugaDK: GuldnældeFI: KeltapeippiDE: Gemeine Goldnessel, Goldtaubnessel EN: Yellow Archangel UV-photos of this species have been published before (Rørslett 2013, http://www.ultraviol...llow-archangel/ )However, subspecies of L. galeobdolon have been described and the flowers shown here have clearly a different UV-appearance. Flowers were photographed near Bensheim, Germany on 24 May 2013. All images were taken with a broadband-modified Panasonic Lumix G1 and the EL-Nikkor 80mm/f5.6 at f8. Visible light image with IR-neutralisation-filter ND (Optic Makario), ISO 100, 1/60s.image reference: NCH_P1080700130524 UV-image, Baader U-filter 2”, ISO 400, 4s, sunlightimage reference: NCH_P1080721130524 UV-image, Baader U-filter 2”, ISO 400, 6s, sunlightimage reference: NCH_P1080737 “simulated bee-colours”: composite image of the UV image (-> blue) (greescale conversion) and the blue (-> green) and green (-> red) channel of the visible light image. The goal of this is to mimic the spectrum that bees and other insect-pollinators can see.image reference: NCH_P1080736_RGB_UV_bw130526 It’s interesting to see the variability of the UV appearance in this species. It is also very distinct from Lamium species like L. album (http://www.ultraviol...te-dead-nettle/ ). [Published 26 May 2013] Link to comment
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