Fomitopsis betulina (birch polypore) grows almost exclusively on birch trees. It is one of the most common species of brown rot fungi.

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Keywords: basidiomycota, betulina, birch, bracket, brown, fomitopsidaceae, fomitopsis, fungus, habitat, hemisphere, misty, mossy, mushroom, north, northern, polyporales, polypore, razor, restricted, rot, strop, toadstool, wales, wood, woodland