Basionym Name:Verrucaria perfragilis Nyl., Lich. Nov. Zeland. (Paris): 128 (1888)
Homotypic synonyms:Polyblastiopsis perfragilis (Nyl.) Zahlbr., Cat. Lich. Univers. 8: 95 (1931)Thelenella perfragilis (Nyl.) Vain., Ann. Acad. Sci. fenn., Ser. A 15(no. 6): 353 (1921)