Homotypic Synonyms See Note

Basionym Name:
Pyrenula mastoidea Ach., Mag. Gesell. naturf. Freunde, Berlin 6(1): 16 (1814)

Homotypic synonyms:
Clathroporina mastoidea (Ach.) R.C. Harris, More Florida Lichens, Incl. 10 Cent Tour Pyrenol. (New York): 172 (1995)
Porina mastoidea (Ach.) Müll. Arg., Bot. Jb. 6: 399 (1885)
Porophora mastoidea (Ach.) Spreng., Syst. veg., Edn 16 4(1): 242 (1827)
Segestria mastoidea (Ach.) Hellb., Bih. K. svenska VetenskAkad. Handl., Afd. 3 21(no. 13): 132 (1896)
Verrucaria mastoidea (Ach.) Nyl., Mém. Soc. Imp. Sci. Nat. Cherbourg 5: 138 (1858)
Verrucaria mastoidea var. mastoidea (Ach.) Nyl., Mém. Soc. Imp. Sci. Nat. Cherbourg 5: 138 (1858)