SUMMARYA previously described numerical taxonomy technique is used to compare the subsectionFloccipedes(in current taxonomy classified underHydropusorMycena, sect.Floccipedes) with the genusHydropus(without subsectionFloccipedes) andGerronemasubgenusGerronema.The technique was developed for assigning genera to families, and there are some differences, which are noted, when it is applied to this lower level. Further comments are made on the general method, including response to discussions of the method by a Swiss mycologist and an American statistician. The taxonomic result of our study confirms that subsectionFloccipedesshould be attached toHydropusrather thanGerronema.