Basionym Name:Trypethelium gregale C. Knight, in Bailey, Syn. Queensl. Fl. 1(Suppl.): 77 (1886)
Homotypic synonyms:Anthracothecium gregale (C. Knight) Aptroot, Australas. Lichenol. 60: 35 (2007)Parmentaria gregalis (C. Knight) Müll. Arg., Flora, Regensburg 70: 426 (1887)