Basionym Name:Parmelia ambigua var. halei Tuck., Syn. N. Amer. Lich. (Boston) 1: 66 (1882)
Homotypic synonyms:Parmeliopsis ambigua var. halei (Tuck.) Zahlbr., Cat. Lich. Univers. 6: 13 (1929)Parmeliopsis halei (Tuck.) Hale, Bryologist 70: 421 (1968)