Andrea B. Posted December 29, 2012 Share Posted December 29, 2012 Blum, A.G. (2012, 2016) Erigeron strigosus Muhl. ex Willd. (Asteraceae) Rough Fleabane. Flowers photographed in ultraviolet, visible and infrared light. Bee vision simulation included. http://www.ultravioletphotography.com/content/index.php/topic/52-erigeron-strigosus-rough-fleabane/[updated 27 July 2016] Comment:Erigeron strigosus and E. annuus can intergrade, however E. strigosus usually has entire lower leaves and stems with sparse, tightly appressed hairs while E. annuus has coarsely toothed leaves and spreading stem hairs. The almost linear leaves of E. strigosus are relatively narrower than the leaves of E. annuus. The corolla and disc in both species are UV-dark. Reference:1. Jepson eFLora. (2012). Key to Erigeron. Jepson Herbarium, U. of Cal.-Berkeley, Berkeley, CA.http://ucjeps.berkel..._IJM.pl?key=4292. New England Wild Flower Society (2016) Erigeron strigosus. Rough Fleabane. https://gobotany.new...eron/strigosus/ SET 1Middletown, New Jersey, USA17 June 2007Wildflower Equipment [Nikon D200-broadband + Nikon 105mm f/4.5 UV-Nikkor] Visible Light [f/16 for 1/125" @ISO400 in Sunlight with Baader UVIR-Block Filter] Ultraviolet Light [f/16 for 2" @ISO400 in Sunlight with Baader UV-Pass Filter] SET 2Tinton Falls, New Jersey, USA27 June 2016Wildflower Equipment [Nikon D600-broadband + Carl Zeiss 60mm f/4.0 UV-Planar] Visible Light [f/11 for 1/160" @ ISO-800 in Sunlight with Baader UVIR-Block Filter] Visible Light [f/11 for 1/200" @ ISO-800 with Onboard Flash and Baader UVIR-Block Filter] Visible Light [f/11 for 1/50" @ ISO-800 in Sunlight with Baader UVIR-Block Filter]Note apressed hairs on stem. Ultraviolet Light [f/11 for 8" @ ISO-400 in Sunlight with BaaderU UV-Pass Filter] UV+Blue+Green [f/4 for 1/8" @ ISO-800 in Sunlight with UG5(1.5mm) + S8612(1.75mm)] Infrared Light [f/11 for 1/200" @ ISO-800 in Sunlight with B+W 092 IR-Pass Filter] Link to comment
Andrea B. Posted July 7, 2016 Author Share Posted July 7, 2016 [updated 27 July 2016] SET 3Shore Cottage, Southwest Harbor, Maine, USA10 August 2014Wildflower Comment: An abaxial view of some E. strigosus capitulua is included.There is a tangle of animal hair on some of the flowers. Equipment [Nikon D600-broadband + Carl Zeiss 60mm f/4.0 UV-Planar] Visible Light [f/11 for 2" @ ISO-100 in Sunlight with Baader UVIR-Block Filter]Deer and other animals frequent the field where this Erigeron was found. Visible Light [f/11 for 2.5" @ ISO-100 with Onboard Flash and Baader UVIR-Block Filter] Visible Light [f/11 for 3" @ ISO-X100XX with Onboard Flash and Baader UVIR-Block Filter]Stem shows apressed hairs. Ultraviolet Light [f/11 for 20" @ ISO-400 with SB-14 UV-modified Flash and BaaderU UV-Pass Filter]Long UV exposures were used to permit multiple flashes. Ultraviolet Light [f/11 for 15" @ ISO-400 with SB-14 UV-modified Flash and BaaderU 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