I work for the project Revision of the Red List of Lichens of Switzerland at the National Data and Information Centre of Swiss lichens (SwissLichens). The main goal of this project is to make national Red List assessments for 800-1000 lichen species using the criteria and categories proposed by the IUCN (International Union for the Conservation of Nature). That involves data collection (i.e., fieldwork), identification of the collected lichens, data handling, deciding which criteria to apply and how, summarizing/modelling all available data, verifying the validity of the results, and documenting the assessment in a transparent and reproducible way.