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Geranium macrorrhizum [Bigroot Geranium]


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Rørslett, B. 2012. Geranium macrorrhizum L. (Geraniaceae). Flowers photographed in visible and ultraviolet light.

http://www.ultraviol...groot-geranium/

 

Geranium macrorrhizum L.

NO: Rosestorkenebb

SE: Flocknäva

EN: Bigroot Geranium; Rock Crane's-Bill

 

A European species, it is native to the South east Alps and the Balkans. Elsewhere it is cultivated as an ornamental garden plant in temperate regions. The plant is also used for medical purposes in the traditional herbal medicine since it possesses high antimicrobiological properties (Radulović et al. 2010).

 

Specimen photographed at the Botanical Garden of University of Oslo, Norway, 15 June 2012.

 

GERA_MAC_B1206152222_VIS.jpg

Image reference: GERA_MAC_B1206152222_VIS.jpg

Visible light: Nikon D3S, Medical-Nikkor 120 mm f/4 lens, built-in ring flash.

 

GERA_MAC_I1206150697_UV.jpg

Image reference: GERA_MAC_I1206150697_UV.jpg

Ultraviolet light: Nikon D40X, UV-Nikkor 105 mm f/4.5 lens, Baader U 2" (Venus) filter, SB-140 flash.

 

The veins on the petals are not UV-prominent unlike other species such as Geranium pratense, G. sanguineum, and G. sylvaticum. There are, however, quite large UV marks on the basal part of the petals combined with the usual UV-dark style and anthers.

 

References:

Radulović, Niko S., Dekić, Milan S., Stojanović-Radić, Zorica Z . & Zoranić, Suad K 2010. Geranium macrorrhizum L. (Geraniaceae) essential oil: a potent agent against Bacillus subtilis. Chemistry biodiversity 7(11): 2783-2800. http://www.mendeley....illus-subtilis/

 

[Published: 23 Dec 2012. Last updated: 17 Jan 2013]

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