Generic short diagnoses: Fleshy, rather short-lived, ectotrophic, white-spored agarics with free to nearly free lamellae and prominent veils; spores amyloid or not, often with low Q-value, lamellar trama divergent.
These pictures are part of the MycoKey project. You can use this link to view larger versions and more information in the MycoKey online version. You can also download and install the full MycoKey project to get thousands of pictures along with detailed generic descriptions, references and interactive, synoptical (multi-access) keys to genera of fungi in Northern Europe.