Basionym Name:Didymium complanatum Schrad., Nov. gen. pl. (Lipsiae): 24 (1797)
Homotypic synonyms:Cionium complanatum (Schrad.) Link, Mag. Gesell. naturf. Freunde, Berlin 3(1-2): 26 (1809)Diderma complanatum (Schrad.) Pers., Syn. meth. fung. (Göttingen) 1: 168 (1801)