Basionym Name:Microglaena reducta Th. Fr., Bot. Notiser: 10 (1863)
Homotypic synonyms:Gloeopyrenia reducta (Th. Fr.) Zahlbr., in Keissler, Rabenh. Krypt.-Fl., Edn 2 (Leipzig) 9(1.2): 436 (1937)Protothelenella reducta (Th. Fr.) Räsänen, Ann. bot. Soc. Zool.-Bot. fenn. Vanamo 18(no. 1): 102 (1943)Thelenella reducta (Th. Fr.) Vain., Acta Soc. Fauna Flora fenn. 49(no. 2): 162 (1921)Verrucaria reducta (Th. Fr.) Vain., Meddn Soc. Fauna Flora fenn. 10: 180 (1883)