So far, some of these groups have been defined cladistically rather than being defined as formal Linnean taxa, though there have been several cases in which older proposed segregates from the Tricholomataceae have been validated by evidence coming from molecular phylogenetics.
Up to this point, certain groups within these classifications have been delineated through a cladistic framework rather than as recognized formal Linnean taxa. Additionally, there have been instances where previously proposed subgroups from the Tricholomataceae have been substantiated by molecular phylogenetic research.