Basionym Name:Rhizocarpon petraeum var. concentricum Mudd, Man. Brit. Lich.: 220 (1861)
Homotypic synonyms:Lecidea lavata * concentrica (Mudd) Stizenb., Ber. Tät. St Gall. naturw. Ges.: 455 (1882)Lecidea lavata subsp. concentrica (Mudd) Lamy, Bull. Soc. bot. Fr. 30(6): 420 (1884)Lecidea obscurata subsp. concentrica (Mudd) Harm., Cat. Descript. Lich. Lorraine IV: 417 (1899)Rhizocarpon calcareum subsp. concentricum (Mudd) Fink, Contr. U.S. natnl. Herb. 14(1): 100 (1910)