Generic short diagnoses:
Tough, white rotting, shelf- or hoof-shaped, often concentrically zoned, smooth to tomentose polypores with small or elongated pores; fusiform simple cystidia present, spores ellipsoid to cylindrical, colourless.
www.MycoKey.com
With the MycoKey DVD you will find thousands of pictures along with detailed
generic descriptions, references and interactive, synoptical keys to the
genera.