The name Hebelomina microspora is validated*. It is supposed that the genera Hebeloma (Fr.) Kumm. and Hebelomina R. Maire differ in their essential characters only in that ‘layer IV’ of the spore wall of Hebeloma, as defined by Besson & Bruchet, is rudimentary in Hebelomina. For the time being it is proposed that they be considered as two separate genera.