Basionym Name:Usnea smithii Du Rietz, Svensk bot. Tidskr. 20: 91, 92 (1926)
Homotypic synonyms:Letharia smithii (Du Rietz) Zahlbr., in Handel-Mazzetti, Symb. Sinic. 3: 200 (1930)Lethariella smithii (Du Rietz) Obermayer, Progr. Probl. Lichenol. Nineties. Proc. Third Symp. Intern. Assoc. Lichenol., Biblthca Lichenol. 68: 58 (1997)