Homotypic Synonyms See Note

Basionym Name:
Buellia colludens Arnold, Flora, Regensburg 53(30–31): 479 (1871)

Homotypic synonyms:
Catillaria colludens (Arnold) Jatta, Fl. ital. crypt. (Florence) 3: 41 (1911)
Catocarpus applanatus var. colludens (Arnold) Hav., Lich. Norveg. Occid. Exs.: no. 242 (1948)
Lecidea hochstetteri var. colludens (Arnold) Vain., Meddn Soc. Fauna Flora fenn. 10: 132 (1883)
Rhizocarpon colludens (Arnold) Fryday, Lichenologist 28(6): 540 (1996)
Rhizocarpon colludens var. colludens (Arnold) Fryday, Lichenologist 28(6): 540 (1996)
Rhizocarpon hochstetteri f. colludens (Arnold) Vain., Meddn Soc. Fauna Flora fenn. 10: 132 (1883)
Rhizocarpon massalongoi f. colludens (Arnold) Zahlbr., [as 'massalongii'] Cat. Lich. Univers. 4: 336 (1926)