Pleomassariaceae

The Pleomassariaceae are a family of fungi in the order Pleosporales. Taxa have a widespread distribution in both temperate and tropical regions, and are saprobic or necrotrophic on wood, bark, and other herbaceous material. The genus was circumscribed by mycologist Margaret Elizabeth Barr-Bigelow in 1979.

Genera
This is a list of the genera in the Pleomassariaceae, based on a 2021 review and summary of fungal classification by Wijayawardene and colleagues. Following the genus name is the taxonomic authority (those who first circumscribed the genus; standardized author abbreviations are used), year of publication, and the number of species:
 * Beverwykella – 3 spp.
 * Lichenopyrenis – 1 sp.
 * Myxocyclus – 1 sp.
 * Peridiothelia – 3 spp.
 * Pleomassaria – 15 spp.
 * Prosthemium – ca. 8 spp.
 * Splanchnonema – 37 spp.