Basionym Name:Thelotrema laevium Vain., [as 'lævius'] J. Bot., Lond. 34: 207 (1896)
Homotypic synonyms:Leptotrema laevium (Vain.) Zahlbr., [as 'laevius'] Cat. Lich. Univers. 2: 635 (1923)