Jahresber. Schles. Ges. Vaterl. Cult. 27: 105 (1849).

Basionym: Lichen cervicornis Ach., Lichenogr. Suec. Prodr.: 184 (1799) ["1798"].

Type locality: Sweden, E. Acharius s.n. (H-ACH 1672B-C - lectotype; BM-Ach 722A - isolectotype). Lectotypification by Ahti (1993: 71).

Chemistry: Fumarprotocetraric acid (Alstrup & Christensen 1995: 24).