Psoronactis is a monotypic fungal genus in the family Roccellaceae.
It contains the single species Psoronactis dilleniana, a saxicolous (rock-dwelling), crustose lichen.
This species was first described in 1799 by Swedish lichenologist Erik Acharius as Lichen dillenianus.
[2] The taxon was shuffled to several genera in the 1800s as different authors had different opinions on how to classify the species;[1] in more modern times, it was transferred to genus Lecanographa in 2013.
[3] Psoronactis was circumscribed in 2014 by Damien Ernst and Anders Tehler, following molecular phylogenetic analysis and revision of the Roccellaceae that showed the species occupied a distinct lineage in the family.