Name requested: Placidium micheliiLichenologist 12 (1): 106.
Homotypic synonym: Endopyrenium micheliiLichenologist 12 (1): 24.
Homotypic synonym: Dermatocarpon micheliiLichenologist 12 (1): 24.
Homotypic synonym: Catapyrenium micheliiLichenologist 12 (1): 24, 24, 106.