Pseudosagedia aenea is a widespread species of corticolous (bark-dwelling) crustose lichen in the family Porinaceae.

It has been shuffled to several different genera in its taxonomic history, including Porina, Pyrenula, Sagedia, and Trichothelium.

The species epithet aenea comes from Latin and refers to the bronze-like appearance of the lichen.

[3] The genus Pseudosagedia is characterised by dark purplish pigments (called Pseudosagedia-violet) in the inner wall of its fruiting bodies.

This pigmentation pattern helps distinguish it from related genera in the family.