birch polypore (Fomitopsis betulina) photo 4 months 0 birch polypore (Fomitopsis betulina) photo 4 months 0 birch polypore (Fomitopsis betulina) photo 4 months 0 birch polypore (Fomitopsis betulina) photo 4 months 0 birch polypore (Fomitopsis betulina) photo about 2 years 0 birch polypore (Fomitopsis betulina) photo about 2 years 0 birch polypore (Fomitopsis betulina) photo about 2 years 0 birch polypore (Fomitopsis betulina) photo about 2 years 0 birch polypore (Fomitopsis betulina) photo about 2 years 0 birch polypore (Fomitopsis betulina) photo about 2 years 0