Homotypic Synonyms See Note

Basionym Name:
Placidium compactum A. Massal., Miscell. Lichenol.: 32 (1856)

Homotypic synonyms:
Catapyrenium compactum (A. Massal.) R. Sant., Lichens of Sweden and Norway (Stockholm): 82 (1984)
Dermatocarpon compactum (A. Massal.) Lettau, Hedwigia 52: 97 (1912)
Dermatocarpon compactum f. compactum (A. Massal.) Lettau, Hedwigia 52: 97 (1912)
Dermatocarpon compactum var. compactum (A. Massal.) Lettau, Hedwigia 52: 97 (1912)
Endocarpon compactum (A. Massal.) Nyl., Mém. Soc. Imp. Sci. Nat. Cherbourg 5: 136 (1858)
Endocarpon compactum f. compactum (A. Massal.) Nyl., Mém. Soc. Imp. Sci. Nat. Cherbourg 5: 136 (1858)
Endopyrenium compactum (A. Massal.) Körb., Parerga lichenol. (Breslau) 4: 303 (1863)
Heteroplacidium compactum (A. Massal.) Gueidan & Cl. Roux, Bull. Inf. Ass. Franç. Lichén. 33(1): 25 (2008)
Placocarpus compactus (A. Massal.) Trevis., Conspect. Verruc.: 19 (1860)
Rhodocarpon compactum (A. Massal.) Lönnr., Flora, Regensburg 41: 619 (1858)
Verrucaria compacta (A. Massal.) Jatta, Syll. Lich. Ital. (Trano): 501 (1900)