Basionym Name:Catapyrenium kaernefeltii Breuss, Linzer biol. Beitr. 25(1): 340 (1993)
Homotypic synonyms:Placidium kaernefeltii (Breuss) Breuss, Annln naturh. Mus. Wien, Ser. B, Bot. Zool. 98(Suppl.): 38 (1996)