Generic short diagnoses:
Typical puffballs with well developed subgleba (± ’stipitate’) and a well delimited, ± round opening; capillitium simple. Surface when young with granules or distinct spines, that in some species readily fall off leaving a distinct pattern or not.
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.