Fomitopsis Betulina Previously Piptoporus Betulinus, Commonly Known As The Birch Polypore, Birch Bracket, Or Razor Strop, Is A Common Bracket Fungus And, As The Name Suggests, Grows Almost Exclusively On Birch Trees. The Brackets Burst Out From The Bark Of The Tree, And These Fruit Bodies Can Last For More Than A Year. Technically, It Is An Edible Mushroom, With A Strong, Pleasant `Mushroomy` Odor But A Bitter Taste. The Velvety Cut Surface Of The Fruit Body Was Traditionally Used As A Strop For Finishing The Edges On Razors, And Also As A Mounting Material For Insect Collections

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almost also bark betulina betulinus birch bitter bodies body bracket brackets burst can collections common commonly cut edges edible exclusively finishing fomitopsis fruit fungus grows insect known last material mounting mushroom mushroomy name odor piptoporus pleasant polypore previously razor razors strong strop suggests surface taste technically traditionally tree trees used velvety year