lichen on the branch of tree.peltigera canina. parasitism, parasite, disease,

abstract alien aphthosa autumn background beautiful beauty biology botany branch broad brown canina canine caribou cladina cladonia common commonly conquest cover damp dark disease distributed dog environment environmental evernia family fantasy foliose forest green grey ground growing growth here infection known landscape leaf lichen lingonberry lobed log macro moist moss mushroom natural nature outdoor parasite parasitism pattern peltigera peltigeraceae plant prunastri rangiferina rangiferinus science seaweed seen snag space species texture thalli tree treepeltigera wet white widely widespread wood wrinkles yellow