Sirosiphon compactus (C.Agardh) Kütz. Dataset United Kingdom Species Inventory (UKSI) Rank SPECIES Classification kingdom Fungi phylum Ascomycota class Lecanoromycetes order Lichinales family Lichinaceae genus Thermutis species Thermutis compacta Name Homonyms Sirosiphon compactus (C.Agardh) Kütz. Sirosiphon compactus (C.Agardh) Kütz. Sirosiphon compactus (Agardh) Kütz.