Atti Soc. ital. Sci. Nat. 11: 615 (1868).

Basionym: Physcia obscura var. firmula Linds., Trans. R. Soc. Edinb. 22: 248 (1859) [1861].

Type locality: India, supra terram in Himalaya, 1220-1520 m, J. D. Hooker & Thomson 2017 (H-Nyl - holotype).