Nova Acta Phys.-Med. Acad. Caes. Leop.-Carol. Nat. Cur., Suppl. 1 19: 212 (1843).

Basionym: Alectoria arabum Dill. ex Ach., Lich. univ.: 596 (1810).

Distribution: Azores, Madeira Islands (Portugal), Hierro and Tenerife (Canary Islands), South Africa, St. Helena (United Kingdom).