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mausboam: Xanthoria elegans
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mausboam: Lichens growing on concrete wall
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mausboam: Xanthoria elegans
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mausboam: fertile Physcia sp.
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mausboam: small specimen of an Usnea sp.
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mausboam: Caloplaca decipiens ?
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mausboam: Physcia tenella on Larch cone