Gloeoheppiaceae Lichinaceae Peltulaceae Lichinales is the sole order of ascomycete fungi in the class Lichinomycetes.

Lichinales was proposed in 1986 by German lichenologists Aino Henssen and Burkhard Büdel.

[2] The class Lichinomycetes was created by Valérie Reeb, François Lutzoni and Claude Roux in 2004.

Phylogenomic analysis of a 481-genome set showed that as a group, the Lichinomycetes have relatively small genomes, and fewer metabolic gene clusters; one consequence of this is an inability to break down cellulose and pectin.

Because of this reduced metabolic capability, Lichinomycetes fungi may have adapted to partner symbiotically with other species to compensate for these losses.