Basionym Name:Cetraria ambigua C. Bab., J. Bot. (Hooker) 4: 244 (1852)
Homotypic synonyms:Allocetraria ambigua (C. Bab.) Kurok. & M.J. Lai, Bull. natn. Sci. Mus., Tokyo, B 17(2): 62 (1991)Platysma ambiguum (C. Bab.) Nyl., Mém. Soc. Imp. Sci. Nat. Cherbourg 5: 100 (1858)