MniumMnium is a genus of mosses belonging to the family Mniaceae. The species of this genus are found in Europe and North America.SpeciesThe following species are recognised in the genus Mnium:Mnium arizonicum J.J. Amann – Arizona calcareous moss Mnium blyttii Bruch & Schimp. – Blytt's calcareous moss Mnium hornum Hedw. – horn calcareous moss Mnium jungermannia L.Mnium lycopodioides Schwägr. Mnium marginatum P. Beauv. – olivegreen calcareous moss Mnium spinosum Schwägr. – spinosum calcareous moss Mnium spinulosum Bruch & Schimp. – largetooth calcareous moss Mnium stellare Hedw. – stellar calcareous moss Mnium thomsonii Schimp. – Thomson's calcareous moss