Generic short diagnoses: Mostly buff to brownish, sometimes reddening basidiomycete truffles, mainly in coniferous forests, with ± olivaceous gleba and ellipsoid to cylindrical, pale and smooth spores.
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.