in Arup, Søchting & Frödén, Nordic J. Bot. 31: 70 (2013). Basionym: Caloplaca arizonica H. Magn., Literature lacking in IF 69 (1944). Opeltia arizonica (H. Magn.) S.Y. Kondr. & Lokös Type: USA, Arizona, Grand Canyon National Park, Coconino Plateau, 1926, G. E. & G. DuRietz 182: 1 (UPS - holotype).
Basionym: Caloplaca arizonica H. Magn., Literature lacking in IF 69 (1944).
Opeltia arizonica (H. Magn.) S.Y. Kondr. & Lokös