usnea hanging in the trees like an old beard

acid air antibiotic are background beard beautiful beauty biology boreal botany cladina cladonia clean closeup detail east eatable environment food forest forests gray green grey growth hanging hornslandet lichen macro moss mosses mossy natural nature north old outdoor outdoors pattern peninsula people picture plant rangiferina reindeer rock season stone summer sweden symbolic taiga taken texture thallus these trebouxia trees tundra usnea usnine white wilderness