Basionym Name:Microglaena reducta Th. Fr., Bot. Notiser: 10 (1863)
Homotypic synonyms: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)