birch bracket

== English == === Noun === birch bracket (plural birch brackets) (mycology) A polypore mushroom that grows almost exclusively on birch trees, Piptoporus betulinus. ==== Synonyms ==== birch polypore razor strop ==== Translations ==== === References === birch bracket on Wikipedia.Wikipedia Piptoporus betulinus on Wikispecies.Wikispecies Category:Piptoporus betulinus on Wikimedia Commons.Wikimedia Commons