Andrea B. Posted December 12, 2013 Share Posted December 12, 2013 Blum, A.G. (2013) Toxicoscordion veneosum (S. Watson) Rydberg (Melanthiaceae) Death Camas. Flowers photographed in visible and ultraviolet light. http://www.ultraviol...um-death-camas/ Twin Pines, La Plata County, Colorado, USA28 April 2013Wildflower Synonyms:Meadow Death CamasZigadenus venenosus S. Watsonformerly in family LiliaceaeComment:The T. veneosum, a monocot with onion-like bulbs containing the neurotoxin zygacine in all parts of the plant, was formerly placed in the family Liliaceae. The racemose flower spike distinguishes T. veneosum from T. paniculatus.In the UV the moderately UV-absorbing sepals show a small UV-bright patch at their base and UV-dark filaments. Reference:1. Flora of North America Online (2013) Zigadenus venenosus, vol. 26, pp. 84. FNA. New York & Oxford. http://www.efloras.o...on_id=242102105 Equipment: [Nikon D600-broadband + Nikon 105mm f/4.5 UV-Nikkor] Visible Light [f/8 for 1/800" @ ISO 200 with Nikon Coolpix A]Death Camas scattered on a dry slope. Visible Light [f/8 for 1/800" @ ISO 200 with Nikon Coolpix A] Ultraviolet Light [f/11 for 1/100” @ ISO 400 with SB-14 UV-modified Flash and Baader UV-Pass Filter] Link to comment
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