Basionym Name:Calicium mutabile Ach., K. Vetensk-Acad. Nya Handl. 5: 234, tab. VIII, fig. 13 (1817)
Homotypic synonyms:Calicium roscidum * mutabile (Ach.) Torss., Enum. Lich. Byssac. Scandin. (Upsaliae): 44 (1843)