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Hand touching tree bark with orange lichen, close-up nature texture Royalty Free Stock Photo

Lobaria linita cabbage lungwort lichen close up on a tree trunk close up Royalty Free Stock Photo

Lichen close-up photo Royalty Free Stock Photo

Texture of gray stone with lichen close up macro Royalty Free Stock Photo

Long green moss with lichen close view texture Royalty Free Stock Photo

Lichen close up macro Royalty Free Stock Photo

Orange slate rock with green lichen close-up Royalty Free Stock Photo

Birch bark with lichen close up Royalty Free Stock Photo

Structure of tree bark covered with green lichen close-up. Royalty Free Stock Photo

Gray lichen close-up on old stone. natural background Royalty Free Stock Photo

birch bark with lichen close-up, macro tree trunk. background texture Royalty Free Stock Photo

Background from texture of poplar bark with lichen. Close up. Royalty Free Stock Photo

Lichen on granite rock, Norway. A lichen is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship. Lichens come in many colors, sizes, and forms.