belted birch tree polypore piptoporus betulinus formitopsis betulina growing on bark of dead tree with blurred golden yellow

autumn background bark belted betulina betulinus birch blurred brown cap closeup color cracked dead environment foliage forest formitopsis fungus germany golden green growing leaves macro mushroom natural nature north november piptoporus plant polypore rhine season texture tree trunk viersen westfalia wood yellow