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Bistorta major [Common Bistort]


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Rørslett, B. 2013. Bistorta major Gray (Polygonaceae). Common Bistort. Flower photograped in visible and ultraviolet light. http://www.ultraviol...common-bistort/

 

Bistorta major Gray

Syn. Persicaria bistorta (L.)Samp.; Polygonum bistorta L.

NO: Ormerot; ormrot

SE: Ormrot

DK: Slangeurt

FI: Konnantatar

DE: Schlangen-Knöterich

EN: Common Bistort

 

A perennial herb up to 1 m tall, B. major is native to Eurasia and nearly circumboreal in several races.It is an ancient medicine plant and also used as an ornamental species. In the Nordic countries it is mainly naturalised from garden escapes and usually occur on meadows and park lands. The terminal spikes with pink flowers are seen in June and July.

 

Plants photographed near Oslo, Norway 22 June 2013. This specimen was naturalised in open deciduous forest.

 

BIST_MAJ_I1306223219_VIS.jpg

Image reference: BIST_MAJ_I1306223219_VIS.jpg

Visible light: Nikon D300, Medical-Nikkor 120 mm f/4 lens, built-in ring flash.

 

BIST_MAJ_I13062241100_UV.jpg

Image reference: BIST_MAJ_I13062241100_UV.jpg

Ultraviolet light: Nikon D600, UV-Nikkor 105 mm f/4.5 lens, Baader U2" (Venus) filter, Broncolor studio flashes (uncoated Xenon tube), 37 frames stacked in Zerene Stacker.

 

The perianth of B. major is covered with low conical cells making iridescence likely.

 

References:

http://www.ultravioletphotography.com/content/index.php?/topic/88-common-literature-references/

 

[Published 23 June 2013]

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