Syn.: Graphina anguina auct. eur. non (Mont.) Müll. Arg., Graphis inustula Nyl. non Stirt., Thalloloma anguinum auct. non (Mont.) Trevis., Ustalia anguina auct. eur. non Mont.
Lichenised. Poorly known taxon.
Substrate: bark
Altitudinal range: from the mesomediterranean belt (potential vegetation: evergreen broad-leaved forests dominated by Quercus ilex) to the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus)
Note: a mild-temperate to tropical species found on smooth bark, now perhaps extinct from the only known station in Italy (Insubrian District).
