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

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