Stock Photo - Lung lichen (Lobaria pulmonaria) is a medicinal foliose lichen that grows on an oak bark tree. This photo was taken in Muniellos Biosphere Reserve, Asturias, Spain.

Stock Photo: Lung lichen (Lobaria pulmonaria) is a medicinal foliose lichen that grows on an oak bark tree. This photo was taken in Muniellos Biosphere Reserve, Asturias.

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