Basionym Name:Conida sordida A. Massal., Miscell. Lichenol.: 16 (1856)
Homotypic synonyms:Celidium sordidum (A. Massal.) Anzi, Cat. Lich. Sondr.: 117 (1860)Celidium varians f. sordidum (A. Massal.) Arnold, [as 'sordida'] Flora, Regensburg 57(7): 106 (1874)