Xanthopyreniaceae

Xanthopyreniaceae is a family of lichen-forming fungi in the order Collemopsidiales. The family was circumscribed by lichenologist Alexander Zahlbruckner in 1926.

Genera
This is a list of the genera in the Xanthopyreniaceae, based on a 2022 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:
 * Collemopsidium Nyl. (1881) – 27 spp.
 * Didymellopsis (Sacc.) Clem. & Shear (1931) – 6 spp.
 * Frigidopyrenia Grube – 1 sp.
 * Rhagadodidymellopsis Fern.-Brime, Gaya, Llimona & Nav.-Ros. (2020) – 1 sp.
 * Zwackhiomacromyces Etayo & van den Boom – 2 spp.
 * Zwackhiomyces Grube & Hafellner – 35 spp.