usnea hanging in the trees like an old beard

usnea hanging trees an old beard are symbolic clean air these mosses antibiotic eatable picture taken sweden peninsula hornslandet cladina rangiferina usnine acid thallus trebouxia cladonia mossy wilderness food reindeer lichen beautiful stone rock outdoors forests moss nature forest plant natural botany tundra growth outdoor summer white texture boreal north beauty background closeup pattern grey taiga detail biology macro environment green gray season no people east