Basionym Name:Pertusaria leucosora subsp. digrediens Nyl., in Parrique, Act. Soc. linn. Bordeaux 53: 91 (1898)
Homotypic synonyms:Pertusaria digrediens (Nyl.) Zahlbr., [as 'disgrediens'] Cat. Lich. Univers. 5: 146 (1927)Pertusaria digrediens f. digrediens (Nyl.) Zahlbr., Cat. Lich. Univers. 5: 146 (1927)Pertusaria leucosora var. digrediens (Nyl.) Boistel, [as 'disgrediens'] Nouv. Fl. Lich. (Paris) 2: 163 (1903)