See text Pseudosagedia is a genus of corticolous (bark-dwelling) lichens in the family Porinaceae.

[2] It was first circumscribed as a section of genus Arthopyrenia by Swiss botanist Johannes Müller Argoviensis in 1862.

[3] Maurice Choisy elevated it to distinct generic status in 1949.

[4] Pseudosagedia was little used until, in 1995, Josef Hafellner and Klaus Kalb resurrected the genus to contain members of the Porina nitidula species group with the perithecial pigment called Pseudosagedia-violet and lacking setae.

[5] As of January 2025[update], Species Fungorum (via the Catalog of Life) accepts 30 species of Pseudosagedia.