Cytisus scoparius [Broom]: More samples and induced fluorescence.

[Nico]

Chalwatzis, N. 2013. Cytisus scoparius (L.) Link (Fabaceae). Broom. Flowers photographed in visible and ultraviolet light, more samples and induced visible fluorescence.

 

Cytisus scoparius (L.) Link

Syn. Sarothamnus scoparius (L.) Wimm. ex W. D. J. Koch, Spartium scoparium L.

 

NO: Gyvel

SE: Harris; harginst

DK: Gyvel

FI: Jänönvihma

DE: Besenginster

EN: Broom

 

UV-images of C. scoparius have been published before by Rørslett, (2013):

http://www.ultraviol...d__445#entry445

However, the samples that are shown here exhibit a different UV-signature. Since different parts of the flowers become visible as it opens, images were taken from multiple states.

Flowers were photographed and collected at three different locations in the Rhein-Main area, Germany, June 4, 10 and 20 2013.

 

All images were taken with a broadband-modified Panasonic Lumix G1 and the EL-Nikkor 80mm/f5.6 at f8-11.

 

Visible light image with IR-neutralisation-filter ND (Optic Makario), ISO 100

image reference: NCH_P1090006_130604

 

UV-image, Baader U-filter 2”, ISO 400, sunlight

image reference: NCH_P1090011_130604

 

Visible light image with the Baader UV/IR cut filter, ISO 100

image reference: NCH_P1090413_130620

 

UV-image, Baader U-filter 2”, ISO 400, sunlight

image reference: NCH_P1090419_130620

 

Visible light image with the Baader UV/IR cut filter, ISO 100

image reference: NCH_P1090425_130620

 

UV-image, Baader U-filter 2”, ISO 400, sunlight

image reference: NCH_P1090440_130620

 

UV-induced visible fluorescence: Panasonic Lumix GH2, Leica Elmarit 45/f2,8

image reference: NCH_P1180871_130610

 

The C. scoparius flowers shown here have a quite complex UV-signature with parts of the flower converting to bright yellow, others that are UV dark and finally an inner part that converts to a (pale) blue.

UV dark parts show an orange fluorescence, darker than the rest of the flower that appear in a greenish yellow.

 

 

[published: June 22 2013]