Basionym Name:Acanthothecium pachygraphoides Vain., Acta Soc. Fauna Flora fenn. 7(no. 2): 94 (1890)
Homotypic synonyms:Acanthotheciopsis pachygraphoides (Vain.) Zahlbr., Cat. Lich. Univers. 2: 448 (1923)Acanthothecis pachygraphoides (Vain.) Clem. & Shear, Gen. fung., Edn 2 (Minneapolis): 307 (1931)