fungi chondrostereum purpureum lichen and moss on a birch trunk

agent autumn background basidiomycota biological birch blurred body chondrostereum colour control curl dead disease drongen education eukaryote fields flocked flower food fruiting fungi geology grass green heterotrophe invertebrate leaf lichen lila lime macro management moss myco mycology nature necrotrofe pathology pest plant populus produce purper purpureum rock saprofyt saprophyte sapwood science set shape shot silver soil stereo stereum tree trunk violet water white wildflower wildlife wood wound