Basionym Name:Pannaria stenophylla Tuck., Proc. Amer. Acad. Arts & Sci. 12: 169 (1877)
Homotypic synonyms:Parmeliella stenophylla (Tuck.) Zahlbr., Cat. Lich. Univers. 3: 224 (1925)Placynthium stenophyllum (Tuck.) Fink, Lich. Fl. U.S.: 172 (1935)Placynthium stenophyllum var. stenophyllum (Tuck.) Fink, Lich. Fl. U.S.: 172 (1935)