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Lichen's Liquid
Image courtesy Ralf Wagner, Nikon Small World
Acid harvested from a lichen plant is seen in polarized light at ten-power magnification.
This lichen species, Evernia divaricata, lives on slow-growing, coniferous trees throughout Europe, North America, and central Asia, according to the Natural History Museum in Oslo, Norway. The species grows bowl-shaped fruiting bodies lined with bright-yellow spores.
The acid shown above is found throughout the lichen, and the rectangular crystals it forms are a "typical property" of the acid, according to a forum post by the photographer, Ralf Wagner, of Düsseldorf, Germany.
Published October 13, 2010
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