Basionym Name:Parmelia singularis Hale, Phytologia 28(3): 267 (1974)
Homotypic synonyms:Hypotrachyna singularis (Hale) Hale, Smithson. Contr. bot. 25: 63 (1975)Remototrachyna singularis (Hale) Flakus, Kukwa & Sipman, in Flakus, Rodríguez Saavedra & Kukwa, Mycotaxon 119: 162 (2012)