Generic short diagnoses:
Medium sized to large operculate discomycetes with a smooth to wrinkled, bell-shaped fertile head on a stipe. On soil in spring.
Species example:
Verpa bohemica - DK: rynket klokkemorkel - asci and spores
The picture originates from the MycoKey 2.0 DVD. Here you will also find a larger picture along with a detailed generic description, references and an interactive, synoptical key to genera.