It is differentiated from other species in genus Inoderma by the form of its thallus, which is entirely made of powdery, granular soredia (vegetative propagules), as well as by the presence of a unique combination of lichen products.

Inoderma sorediatum was formally described as a new species in 2018 by Damien Ertz, Anna Łubek, and Martin Kukwa.

The photobiont partner of the lichen is trentepohlioid (i.e., filamentous, multicellular green algae from genus Trentepohlia).

[2] Inoderma sorediatum grows in the deep bark crevices of large trees (both living and dead), usually Quercus robur, but also Fraxinus excelsior.

Other lichen species growing in close association include Chaenotheca chrysocephala, Chaenothecopsis cf.