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Tripleurospermum maritimum [Sea Mayweed]


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#1 nfoto

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Posted 19 December 2012 - 15:44

Rørslett, B. 2012. Tripleurospermum maritimum (L.) W.D. Koch (Asteraceae). Sea Mayweed. Flowers photographed in visible and ultraviolet light. http://www.ultraviol...um-sea-mayweed/

Tripleurospermum maritimum (L.)W.D.Koch

Syn. Matricaria maritima L.; M. inodora L. ssp. maritima (L.) Neuman, M. inodora L. var. maritima (L.) Wahlenb. (ssp. maritimum), M. maritima L. ssp. subpolaris (Pobed.) Rauschert, T. maritimum (L.) W. D. J. Koch var. boreale (Hartm.) (ssp. subpolare)
NO: Strandbalderbrå
SE: Kustbaldersbrå; nordbaldersbrå (ssp. subpolare (Pobed.)Hämet-Ahti)
DK: Strand-Kamill
FI: Merisaunio
IS: Baldersbrá (ssp. phaecephalum (Rupr.) Hämet-Ahti)
DE: Küsten-Kamille
EN: Sea Mayweed

Having a circumpolar distribution in a number of subspecies and mainly bound to coastal areas, this is a biannual or perennial species with a strongly developed root system. It is often confused with its annual relative, T. inodorum, and they form intermediate hybrids. The UV signatures of these species are similar but not identical. Thus, T. maritimum apparently has higher UV reflectivity of the ray flowers combined with less development of patches with conical cells. More studies are required to ascertain whether these differences are significant.

Specimen from Risør, South Norway, 28 Jun 2010.

Attached Image: TRIP_MAR_I1006281575_VIS.jpg
Image reference: TRIP_MAR_I1006281575_VIS.jpg
Visible light: Nikon D3S, UV-Nikkor 105 mm f/4.5 lens, Baader UV/IR Cut filter

Attached Image: TRIP_MAR_I1006280853_UV.jpg
Image reference: TRIP_MAR_I1006280853_UV.jpg
Ultraviolet light: Nikon D40X, UV-Nikkor 105 mm f/4.5 lens, Baader U 2" (Venus) filter

Dried drops of salt brine are prominently visible on the UV capture.

[Published: 23 Dec 2012 Last updated: 18 Jan 2013]