Nordic J. Bot. 22: 89 (2002).

Protolog: Erioderma leylandii similis sed thallo dense hirsuto, et apotheciis fuscis, magnis, acidum argopsicum vel barbaticoideum continens.

Type: Ecuador, Azuay, on road Gualaceo - G. Leonidas Plaza, epiphyte, montane scrub in the pass, 3500 m, 11. July 1983, L. & A. Arvidsson 4456 (GB, holotypus; BG, isotypus).

Type locality: Ecuador, Azuay, on road Gualaceo - G. Leonidas Plaza, epiphyte, montane scrub in the pass, 3500 m, 11.7.1983, L. & A. Arvidsson 4456 (GB - holotypus; BG - isotypus).