Basionym Name:Parmelia tiliacea var. rugulosa Leight., Lich.-Fl. Great Brit.: 131 (1871)
Homotypic synonyms:Parmelia quercina f. rugosula (Leight.) Hillmann, Rabenh. Krypt.-Fl., Edn 2 (Leipzig) 9.5(3): 192 (1936)