Generic short diagnoses:
Saprobic, dark brown-spored agarics with strongly developed veil, forming a primary innate covering of the entire pileus and lamellae marbled and weeping when young; spores with dark verrucae and a prominent truncate germ pore.
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.