Andrea B. Posted May 8, 2013 Share Posted May 8, 2013 Blum, A.G. (2013) Delphinium nuttallianum Pritzel in Walpers (Ranunculaceae) Meadow Larkspur. Flowers photographed in ultraviolet and visible light. http://www.ultraviol...eadow-larkspur/ Twin Pines, La Plata County, Colorado, USAAt an altitude of 7525ft near Durango.05 May 2013Wildflower Synonyms:Delphinium laced in family Helleboraceae by some authors.Delphinium nelsoniiComment:This Larkspur has a very interesting UV signature with the two upper petals showing UV-black against the brighter sepals. The anthers are UV-black on UV-bright filaments. The spur is UV-black.Key ID points for this specimen which distinguish it from D. barbeyi which also grows in La Plata County:spring flowering.open coniferous woods.dry soil conditions.montane zone.lower petal blades elevated, exposing stamens.Reference:1. Flora of North America Online. (2013) Delphinium nuttallianum Pritzel in Walpers, vol. 3. FNA. New York & Oxford. http://www.efloras.o...on_id=2335005252. Weber & Wittmann (2012) Delphinium L., page 215. Colorado Flora: Western Slope, 4th Ed. The U. of Colo. Press, Boulder, CO. Equipment [Nikon D600-broadband + Nikon 105mm f/4.5 UV-Nikkor] Visible Light [f/11 for 1/2250" @ ISO 400 in Sunlight with Baader UVIR-Block Filter] Visible Light [f/11 for 1/200" @ ISO 400 with onboard Flash and Baader UVIR-Block Filter] Ultraviolet Light [f/11 for 1/80" @ ISO 400 with SB-14 UV-modified Flash and Baader UV-Pass Filter] Link to comment
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now