Basionym Name:Polyblastia japonica Vain. & Yasuda, Bot. Mag., Tokyo 35: 75 (1921)
Homotypic synonyms:Arthothelium japonicum (Vain. & Yasuda) H. Harada, in Harada, Okamoto & Yoshimura, Lichenology 2(2): 131 (2004)