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UltravioletPhotography

Erigeron strigosus [Rough Fleabane]


Andrea B.

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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=429

2. New England Wild Flower Society (2016) Erigeron strigosus. Rough Fleabane. https://gobotany.new...eron/strigosus/

 

SET 1

Middletown, New Jersey, USA

17 June 2007

Wildflower

 

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]

erigeronStrigosusVis061707wf_14596proofPnCrop.jpg

 

Ultraviolet Light [f/16 for 2" @ISO400 in Sunlight with Baader UV-Pass Filter]

erigeronStrigosusUV061707wf_14603proofPnCrop.jpg

 

 

SET 2

Tinton Falls, New Jersey, USA

27 June 2016

Wildflower

 

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]

erigeronStrigosus_visSun_20160627tintonFallsNJ_46760pn.jpg

 

Visible Light [f/11 for 1/200" @ ISO-800 with Onboard Flash and Baader UVIR-Block Filter]

erigeronStrigosusAbaxial_visSun_20160627tintonFallsNJ_46838pn.jpg

 

Visible Light [f/11 for 1/50" @ ISO-800 in Sunlight with Baader UVIR-Block Filter]

Note apressed hairs on stem.

erigeronStrigosusStem_visSun_20160627tintonFallsNJ_46818pn.jpg

 

Ultraviolet Light [f/11 for 8" @ ISO-400 in Sunlight with BaaderU UV-Pass Filter]

erigeronStrigosus_uvBaadSun_20160627tintonFallsNJ_46748pn.jpg

 

UV+Blue+Green [f/4 for 1/8" @ ISO-800 in Sunlight with UG5(1.5mm) + S8612(1.75mm)]

erigeronStrigosus_ug5_s8612_175_Sun_20160627tintonFallsNJ_46785pn01.jpg

 

Infrared Light [f/11 for 1/200" @ ISO-800 in Sunlight with B+W 092 IR-Pass Filter]

erigeronStrigosus_092IrSun_20160627tintonFallsNJ_46763pn.jpg

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  • 3 years later...

[updated 27 July 2016]

 

SET 3

Shore Cottage, Southwest Harbor, Maine, USA

10 August 2014

Wildflower

 

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.

erigeronStrigosus_visSun_20140710_swhME_20386pn.jpg

 

Visible Light [f/11 for 2.5" @ ISO-100 with Onboard Flash and Baader UVIR-Block Filter]

erigeronStrigosusAbaxial_visFlash_20140710_swhME_20432pn.jpg

 

Visible Light [f/11 for 3" @ ISO-X100XX with Onboard Flash and Baader UVIR-Block Filter]

Stem shows apressed hairs.

erigeronStrigosusStem_visFlash_20140710_swhME_20445pn.jpg

 

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.

erigeronStrigosus_uvBaadSB14_20140710_swhME_20405pf.jpg

 

Ultraviolet Light [f/11 for 15" @ ISO-400 with SB-14 UV-modified Flash and BaaderU UV-Pass Filter]

erigeronStrigosusAbaxial_uvBaadSB14_20140710_swhME_20436pf.jpg

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