Basionym Name:Parmelia willisii Kurok. & Filson, in Filson, Aust. J. Bot. 30(5): 577 (1982)
Homotypic synonyms:Xanthoparmelia willisii (Kurok. & Filson) Elix & J. Johnst., in Elix, Johnston & Armstrong, Bull. Br. Mus. nat. Hist., Bot. 15(3): 355 (1986)