Bondarzewia mesenterica

Bondarzewia mesenterica (synonym: "Bondarzewia montana") is a species of polypore fungus in the family Bondarzewiaceae. It was first described as "Boletus mesentericus" by Jacob Christian Schäffer in 1774. Hanns Kreisel transferred it to the genus "Bondarzewia" in 1984. The species is edible.