xanthoria parietina and a consortium of different types of lichens on a thick tree branch

algae bark biodiversity biology botany branch closeup conservation crustose detail detailed ecology environment foliose folioselichen forest fungi fungus gray green growth habitat intricatepattern lecanoromycetes lichen lichens macro microhabitat microscopic moss native natural nature organic organisms physcia physciaceae species spores surface symbiosis taxonomy texture thallus tree wildlife