Basionym Name:Parmelia crustacea Lynge, Ark. Bot. 13(no. 13): 108 (1914)
Homotypic synonyms:Hypotrachyna crustacea (Lynge) Marcelli & Jungbluth, in Marcelli, Jungbluth, Benatti, Spielmann, Canêz, Cunha & Martins, Biblthca Lichenol. 96: 211 (2007)