The unexpectedly weird and beautiful world of lichens

Mother Nature Network: Lichen is something we commonly see growing on rocks or tree branches, on old wood fences and rotting stumps. But how often do you stop to really ponder lichens? Probably not often. And yet lichens are surprisingly fascinating, and weird -- and beautiful! Despite their looks, lichens aren't actually a plant. Nor are they a fungus. They're a unique composite organism, the result of a symbiotic relationship of organisms from as many as three kingdoms, with the main partner being fungus. As Lichens......

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