Basionym Name:Arthonia subsimillima Nyl., Bull. Soc. linn. Normandie, sér. 2 2: 103 (1868)
Homotypic synonyms:Arthothelium subsimillimum (Nyl.) Müll. Arg., Flora, Regensburg 64(7): 111 (1881)Arthothelium subsimillimum var. subsimillimum (Nyl.) Müll. Arg., Flora, Regensburg 64(7): 111 (1881)