usnea lichen can only grow ecologically clean places planet spruce tree that died from pests covered with

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Usnea lichen can only grow in ecologically clean places on planet. Spruce tree that died from pests is covered with usnea Royalty Free Stock Photo

Usnea lichen can only grow in ecologically clean places on planet. Spruce tree that died from pests is covered with usnea in Dombay. North Caucasus Mountains in Karachay-Cherkessia, Russia