The genus Phylloporis was originally established by Frederic Clements in 1909,[3] primarily to accommodate species with a foliicolous (leaf-dwelling) growth habit.

Despite this, the genus was later merged into Strigula by some taxonomists due to shared anatomical characteristics, such as ascus type and internal anatomy.

These distinctions have led to the resurrection of Phylloporis as a separate genus, supported by molecular phylogenetics evidence presented by Jiang and colleagues in 2020.

[4] Currently, Phylloporis is recognised as a basally diverging lineage among the foliicolous clades of Strigula sensu lato (in the loose sense).

Its supracuticular (surface-dwelling) thallus, in contrast to the subcuticular growth seen in other clades, is thought to be an ancestral trait shared with genera such as Flavobathelium and Phyllobathelium.

These asci are cylindrical, with a short stalk (pedicel) and a narrow ocular chamber at the tip, and they do not react to iodine staining (non-amyloid).