in Frödén & Lassen, Lichenologist 36, 5: 295 (2004).

Basionym: Borrera aurantiaca R. Br., Suppl. to the Appendix of Cpt. Parrys Voyag., Nat. Hist.: CCCV (1824).

Type locality: Canada, Northwest Territories, Melville Island, Winter Harbour, 23.7.1820, R. Brown (BM - lectotype). Lectotypification by Frödén & Lassen (2004: 296).

Type locality coordinates: 75°30'0"N, 111°30'0"W; 75.5, -111.5.