Generic short diagnoses: A large, cushion-shaped operculate discomycete with narrowly attached apothecia, that touch the ground at the margin; underside with hyphal cords; spores with apiculate ornaments. On burnt soil near conifers (e.g. Pinus)
Rhizina undulata - DK: rodmorkel, UK: Pine Firefungus
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.