O.  Breuss, ?An updated world-wide key to the catapyrenioid lichens (Verrucariaceae)?, Herzogia, vol. 23, pp. 205-216, 2010.

M.  Prieto, Martínez, I., Aragón, G., Gueidan, C., and Lutzoni, F., ?Molecular phylogeny of Heteroplacidium, Placidium, and related catapyrenioid genera (Verrucariaceae, lichen-forming Ascomycota)?, American Journal of Botany, vol. 99, pp. 23-35, 2012.

C.  Gueidan, Roux, C., and Lutzoni, F., ?Using a multigene phylogenetic analysis to assess generic delineation and character evolution in Verrucariaceae (Verrucariales, Ascomycota)?, Mycological Research, vol. 111, pp. 1145-1168, 2007.

M.  Prieto, Aragón, G., and Martínez, I., ?The genus Catapyrenium s. lat. ( Verrucariaceae) in the Iberian Peninsula and the Balearic Islands?, Lichenologist, vol. 42, pp. 637-684, 2010.

O.  Breuss, ?Über einige wenig bekannte Verrucaria-Arten (Lichenes, Verrucariaceae)?, Österreichische Zeitschrift für Pilzkunde, vol. 3, pp. 15-20, 1994.

C. J. B.  Hitch, ?New rare and interesting lichens?, British Lichen Society Bulletin, vol. 113, pp. 64-73, 2013.