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In spring, lichen appears on Arctic rocks
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The “map lichen” (rhizocarpon geographicum) is found on the most exposed rocks of the Canadian Arctic Archipelago. It owes its name to its mosaic aspect forming a sort of geographical map. Surprisingly, lichens are not plants but an association of algae cells and fungi living together. Some lichens such as “rock tripe” are edible and used in native recipes.
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