 The genus, as strictly defined, appears to be polyphyletic when looking at data produced by the molecular study by Moncalvo in 2002, with species of "Nolanea", "Leptonia" and "Inocephalus" interspersed with various "Entoloma" species in a broadly monophyletic entolomatoid group.Most species are saprobic, though some may form mycorrhizal relationships.They may be found in a wide variety of habitats, including grasslands, woodlands, peat-bogs and moors, and Arctic or alpine conditions.