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A new species, Didymodon imbricatus C. Feng & J. Kou, is described and illustrated from Nianzishan District, Heilongjiang Province, China. It is characterized mainly by short‐lanceolate to ovate‐lanceolate leaves with broadly acute to obtuse and strongly cucullate apex, leaf margins recurved throughout and bistratose in distal part, lamina red with KOH, costa ending below apex and usually spurred above midleaf, with guide cells in 2 layers below midleaf and without ventral stereids, and the presence of gemmae in the leaf axils. The new species is contrasted with similar species in the genus.