Basionym Name:Opegrapha grumulosa Dufour, J. Phys. Chim. Hist. nat. Arts 87: 214 (1818)
Homotypic synonyms:Lecanactis grumulosa (Dufour) Fr., Lich. eur. reform. (Lund): 375 (1831)Lecanactis grumulosa var. grumulosa (Dufour) Fr., Lich. eur. reform. (Lund): 375 (1831)Lecanactis monstrosa var. grumulosa (Dufour) Lettau, Feddes Repert., Beih. 69(no. 1): 47 (1932)Lecanographa grumulosa (Dufour) Egea & Torrente, Biblthca Lichenol. 54: 134 (1994)Paralecanographa grumulosa (Dufour) Ertz & Tehler, Fungal Diversity 49(1): 57 (2011)