Cat. Lich. Univers. 2: 123 (1922) [1924]. Basionym: Arthonia cinereoargentea C. Knight, in Shirley, Proc. R. Soc. Qd. 6: 212 (1889).
Basionym: Arthonia cinereoargentea C. Knight, in Shirley, Proc. R. Soc. Qd. 6: 212 (1889).