There's a new checklist for Agaricales in Belgium: https://docs.google.com/spreadsheets/d/1LeXXbry2ArK2rngsmFjz_xErwE1KwQ8ujtvHNmTVA6E/edit?gid=1362985548#gid=1362985548
We should publish this as a separate list to GBIF and remove the species from the ad hoc checklist.