© 2017, The Author(s). The current paper represents the third contribution in the Genera of Fungi series, linking the type species of fungal genera to their morphology and DNA sequence data, and, where possible, ecology. In this issue, we have focused on six genera, including macro- and microfungi, four of which the type species is epitypified. In addition, two new families within Pleosporales and Xylariales are proposed to accommodate two of them. The genera treated here include: Aleurocystis (Aleurocystis hakgallae; incertae sedis, Agaricales), Blastacervulus (Blastacervulus eucalypti; Asterinaceae, Asterinales), Clypeophysalospora (Clypeophysalospora latitans; Clypeophysalosporaceae, Xylariales), Licrostroma (Licrostroma subgiganteum; Peniophoraceae, Russulales), Neohendersonia (Neohendersonia kickxii; Neohendersoniaceae, Pleosporales) and Spumatoria (Spumatoria longicollis; Ophiostomataceae, Ophiostomatales). Authors interested in contributing accounts of individual genera to larger multi-authored papers should contact the associate editors listed on the List of Protected Generic Names for Fungi.